diff --git a/changelog.md b/changelog.md
index 128fe5c9b4a3..97acb31c848b 100644
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,142 @@
+ <a name="4.0.0-alpha.0"></a>
+# 4.0.0-alpha.0 (2018-10-31)
+[Full Changelog](https://github.com/googlechrome/lighthouse/compare/v3.2.0...v4.0.0-alpha.0)
+
+## New Contributors!
+Thanks to @carlesnunez and @justin0022 for their first contributions!
+
+Thanks to @CodeDem for improving how the image-aspect-ratio audit handles small images!
+
+Huge thanks to myself (@Hoten) for joining Lighthouse! Go me!
+
+## New Audits
+
+* offline-start-url ([#6397](https://github.com/googlechrome/lighthouse/pull/6397))
+
+## Core
+
+* aspectratio: ignore placeholder images ([#6305](https://github.com/googlechrome/lighthouse/pull/6305))
+* audit: add utm parameters when calling snyk ([#6172](https://github.com/googlechrome/lighthouse/pull/6172))
+* audits: clarify diff between load-fast-enough-for-pwa's TTI and perf TTI ([#6286](https://github.com/googlechrome/lighthouse/pull/6286))
+* axe: disable unused audits ([#6180](https://github.com/googlechrome/lighthouse/pull/6180))
+* computed: fix new computed artifact interface ([#6151](https://github.com/googlechrome/lighthouse/pull/6151))
+* config: add new PWA category groups ([#6396](https://github.com/googlechrome/lighthouse/pull/6396))
+* critical-request-chain: remove empty children from LHR ([#6211](https://github.com/googlechrome/lighthouse/pull/6211))
+* driver: save performance.now() to avoid conflict ([#6387](https://github.com/googlechrome/lighthouse/pull/6387))
+* driver: request smaller trace in m71+ ([#6117](https://github.com/googlechrome/lighthouse/pull/6117))
+* driver: stringify protocol error messages ([#6302](https://github.com/googlechrome/lighthouse/pull/6302))
+* driver: address bckenny feedback on #6117 ([#6285](https://github.com/googlechrome/lighthouse/pull/6285))
+* driver: reduce required traceCategories again ([54baf91](https://github.com/googlechrome/lighthouse/commit/54baf91))
+* driver: recover from rejection on handleJavaScriptDialog ([#6327](https://github.com/googlechrome/lighthouse/pull/6327))
+* emulation: fix missing space in mobile UA ([#6161](https://github.com/googlechrome/lighthouse/pull/6161))
+* icons: defer to manifest-icon type hint for image type ([#6230](https://github.com/googlechrome/lighthouse/pull/6230))
+* network: handle invalid NetworkRequests ([#6157](https://github.com/googlechrome/lighthouse/pull/6157))
+* network-analyzer: move throughput to NetworkAnalyzer ([#5900](https://github.com/googlechrome/lighthouse/pull/5900))
+* perf: add timing instrumentation to measure runtime perf ([#3745](https://github.com/googlechrome/lighthouse/pull/3745))
+* proto: add proto definition for LHR ([#6183](https://github.com/googlechrome/lighthouse/pull/6183))
+* simulator: start nodes in observed order ([#5362](https://github.com/googlechrome/lighthouse/pull/5362))
+* unminified-javascript: replace esprima with custom tokenizer ([#5925](https://github.com/googlechrome/lighthouse/pull/5925))
+* remove recoverOrThrow / err.fatal ([#6343](https://github.com/googlechrome/lighthouse/pull/6343))
+* convert computed artifact loading to regular require() ([#6204](https://github.com/googlechrome/lighthouse/pull/6204))
+* remove no-websql audit ([#6293](https://github.com/googlechrome/lighthouse/pull/6293))
+* bail on run if insecure ssl certification ([#6300](https://github.com/googlechrome/lighthouse/pull/6300))
+* make throttled offscreen-images work without TTI ([#6039](https://github.com/googlechrome/lighthouse/pull/6039))
+* save HTMLElement.p.matches function to avoid conflict ([#6283](https://github.com/googlechrome/lighthouse/pull/6283))
+* remove fonts gatherer, move font-display to use CSSUsage artifact ([#6166](https://github.com/googlechrome/lighthouse/pull/6166))
+* remove last dependency on WebInspector ([#6209](https://github.com/googlechrome/lighthouse/pull/6209))
+* add timeout to all protocol commands ([#6347](https://github.com/googlechrome/lighthouse/pull/6347))
+* don't load blank page twice in first pass ([#6369](https://github.com/googlechrome/lighthouse/pull/6369))
+* refactor finding of trace start ([#6370](https://github.com/googlechrome/lighthouse/pull/6370))
+* increase Page.navigate timeout ([#6412](https://github.com/googlechrome/lighthouse/pull/6412))
+
+## Report
+
+* fix tooltip hover animation ([#6288](https://github.com/googlechrome/lighthouse/pull/6288))
+* reframe Fast 3G as Slow 4G ([#6163](https://github.com/googlechrome/lighthouse/pull/6163))
+* fix html report viewing bugs for Safari ([#6143](https://github.com/googlechrome/lighthouse/pull/6143))
+* dom-size: right-align the value column ([#6372](https://github.com/googlechrome/lighthouse/pull/6372))
+
+## Clients
+
+* simplify viewer build process ([#6426](https://github.com/googlechrome/lighthouse/pull/6426))
+* reorganize file structure and build process ([#6344](https://github.com/googlechrome/lighthouse/pull/6344))
+* build: ignore all locales from devtools & extension build ([#6170](https://github.com/googlechrome/lighthouse/pull/6170))
+* lr: skip early emulation now that lr-desktop is defined ([#6158](https://github.com/googlechrome/lighthouse/pull/6158))
+* split browserifying and extension packaging into separate scripts ([#6295](https://github.com/googlechrome/lighthouse/pull/6295))
+* simplify bundle building ([#6282](https://github.com/googlechrome/lighthouse/pull/6282))
+* stop report bug prompt for file:// urls ([#6278](https://github.com/googlechrome/lighthouse/pull/6278))
+
+## Deps
+
+* update typescript to latest patch release ([#6235](https://github.com/googlechrome/lighthouse/pull/6235))
+* update to tsc 3.1.1 ([#6126](https://github.com/googlechrome/lighthouse/pull/6126))
+* jsdom: upgrade to support Element.prototype.closest ([#6411](https://github.com/googlechrome/lighthouse/pull/6411))
+* snyk: update snyk snapshot ([#6377](https://github.com/googlechrome/lighthouse/pull/6377))
+
+## Docs
+
+* contributing: consistent capitalization ([#6174](https://github.com/googlechrome/lighthouse/pull/6174))
+* new-audits: revise issue template ([#6233](https://github.com/googlechrome/lighthouse/pull/6233))
+* readme: Add new related project, lighthouse-github-reporter ([#6307](https://github.com/googlechrome/lighthouse/pull/6307))
+* readme: change image references be commit hash raw gh urls ([#6116](https://github.com/googlechrome/lighthouse/pull/6116))
+* add primer on viewing the timing data ([#6393](https://github.com/googlechrome/lighthouse/pull/6393))
+* typo fix ([#6335](https://github.com/googlechrome/lighthouse/pull/6335))
+* Remove "sh" format for CLI --help output ([#6311](https://github.com/googlechrome/lighthouse/pull/6311))
+* update docs for --output-path re: multiple output types ([#6339](https://github.com/googlechrome/lighthouse/pull/6339))
+
+## I18n
+
+* roll latest messages from TC ([#6388](https://github.com/googlechrome/lighthouse/pull/6388))
+* update test for new canonical locale codes ([#6360](https://github.com/googlechrome/lighthouse/pull/6360))
+
+## Tests
+
+* use predictable numbers in golden LHR ([#6404](https://github.com/googlechrome/lighthouse/pull/6404))
+* add basic sentry tests ([#6308](https://github.com/googlechrome/lighthouse/pull/6308))
+* restore lr-entry test ([#6214](https://github.com/googlechrome/lighthouse/pull/6214))
+* remove more mock computed artifacts ([#6195](https://github.com/googlechrome/lighthouse/pull/6195))
+* add trace creator ([#6196](https://github.com/googlechrome/lighthouse/pull/6196))
+* add networkRecord-to-devtoolsLog mocking utility ([#6171](https://github.com/googlechrome/lighthouse/pull/6171))
+* add angular test for JS minification ([#6138](https://github.com/googlechrome/lighthouse/pull/6138))
+* run node 10 on Travis ([#6361](https://github.com/googlechrome/lighthouse/pull/6361))
+
+## Misc
+
+* tweaks for devtools client ([#6127](https://github.com/googlechrome/lighthouse/pull/6127))
+* simplify proto npm scripts ([#6406](https://github.com/googlechrome/lighthouse/pull/6406))
+* add cli module diagram ([#6129](https://github.com/googlechrome/lighthouse/pull/6129))
+* keep download-chrome script in npm package ([#6153](https://github.com/googlechrome/lighthouse/pull/6153))
+* lantern script path resolution fix ([#6380](https://github.com/googlechrome/lighthouse/pull/6380))
+* add integrity data to yarn.lock ([#6212](https://github.com/googlechrome/lighthouse/pull/6212))
+* add yarn integrity hashes for extension/viewer ([#6277](https://github.com/googlechrome/lighthouse/pull/6277))
+* only allow 1 error from each audit/gatherer ([#6215](https://github.com/googlechrome/lighthouse/pull/6215))
+* Revert "core(driver): stringify protocol error messages (#6302)" ([#6328](https://github.com/googlechrome/lighthouse/pull/6328))
+* fix typo in feature request template ([#6431](https://github.com/googlechrome/lighthouse/pull/6431))
+* remove plots/ ([#6346](https://github.com/googlechrome/lighthouse/pull/6346))
+* build: cleanup extension package zip using gulp ([#6210](https://github.com/googlechrome/lighthouse/pull/6210))
+* build: rename bundled files (devtools/ext/lr) ([#6179](https://github.com/googlechrome/lighthouse/pull/6179))
+* eslint: enforce infix-op spacing ([#6382](https://github.com/googlechrome/lighthouse/pull/6382))
+* logger: isVerbose(), getTimeEntries() ([#6383](https://github.com/googlechrome/lighthouse/pull/6383))
+* logging: add hanging request logging in driver ([#6297](https://github.com/googlechrome/lighthouse/pull/6297))
+* proto: made default LighthouseError enum 'UNDEFINED' ([#6334](https://github.com/googlechrome/lighthouse/pull/6334))
+* proto: align proto whitespace ([#6374](https://github.com/googlechrome/lighthouse/pull/6374))
+* proto: convert int32's into DoubleValue in proto ([#6332](https://github.com/googlechrome/lighthouse/pull/6332))
+* proto: adjust configSetting.output in preprocessor ([#6310](https://github.com/googlechrome/lighthouse/pull/6310))
+* proto: add audit_mode and timings ([#6363](https://github.com/googlechrome/lighthouse/pull/6363))
+* proto: fix linting and add LR hook ([#6373](https://github.com/googlechrome/lighthouse/pull/6373))
+* proto: make NO_ERROR default in proto ([#6358](https://github.com/googlechrome/lighthouse/pull/6358))
+* proto: reduce configSettings in proto to minimum ([88b2829](https://github.com/googlechrome/lighthouse/commit/88b2829))
+* yarn: update lockfile for micromatch ([#6384](https://github.com/googlechrome/lighthouse/pull/6384))
+
+<a name="3.2.1"></a>
+# 3.2.1 (2018-10-01)
+[Full Changelog](https://github.com/googlechrome/lighthouse/compare/v3.2.0...v3.2.1)
+
+## Core
+
+* emulation: set desktop viewport to 1350x940 ([#6131](https://github.com/googlechrome/lighthouse/pull/6131))
+* await js-libraries detection ([#6141](https://github.com/googlechrome/lighthouse/pull/6141))
+
  <a name="3.2.0"></a>
 # 3.2.0 (2018-09-27)
 [Full Changelog](https://github.com/googlechrome/lighthouse/compare/v3.1.1...v3.2.0)
diff --git a/clients/extension/manifest.json b/clients/extension/manifest.json
index 5dfb917e5fd7..21bc640406b4 100644
--- a/clients/extension/manifest.json
+++ b/clients/extension/manifest.json
@@ -1,6 +1,6 @@
 {
   "name": "__MSG_appName__",
-  "version": "3.2.0",
+  "version": "3.3.0.4000",
   "minimum_chrome_version": "66",
   "manifest_version": 2,
   "description": "__MSG_appDescription__",
diff --git a/docs/releasing.md b/docs/releasing.md
index 3d129ebc3772..5a203bc6d11e 100644
--- a/docs/releasing.md
+++ b/docs/releasing.md
@@ -70,6 +70,8 @@ echo "Test the lighthouse-viewer build"
 # Start a server in dist/viewer/ and open the page in a tab. You should see the viewer.
 # Drop in a results.json or paste an existing gist url (e.g. https://gist.github.com/ebidel/b9fd478b5f40bf5fab174439dc18f83a).
 # Check for errors!
+cd dist/viewer ; python -m SimpleHTTPServer
+# go to http://localhost:8000/
 
 # * Update changelog *
 git fetch --tags
diff --git a/lighthouse-core/test/results/sample_v2.json b/lighthouse-core/test/results/sample_v2.json
index 424dc2862f4f..6efb0e73fddc 100644
--- a/lighthouse-core/test/results/sample_v2.json
+++ b/lighthouse-core/test/results/sample_v2.json
@@ -5,7 +5,7 @@
     "hostUserAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3358.0 Safari/537.36",
     "benchmarkIndex": 1000
   },
-  "lighthouseVersion": "3.2.0",
+  "lighthouseVersion": "4.0.0-alpha.0",
   "fetchTime": "2018-03-13T00:55:45.840Z",
   "requestedUrl": "http://localhost:10200/dobetterweb/dbw_tester.html",
   "finalUrl": "http://localhost:10200/dobetterweb/dbw_tester.html",
diff --git a/lighthouse-viewer/app/src/lighthouse-report-viewer.js b/lighthouse-viewer/app/src/lighthouse-report-viewer.js
index b56558315da8..c8a76a15874e 100644
--- a/lighthouse-viewer/app/src/lighthouse-report-viewer.js
+++ b/lighthouse-viewer/app/src/lighthouse-report-viewer.js
@@ -138,11 +138,13 @@ class LighthouseReportViewer {
   _replaceReportHtml(json) {
     this._validateReportJson(json);
 
-    if (!json.lighthouseVersion.startsWith('3')) {
+    if (json.lighthouseVersion.startsWith('2')) {
       this._loadInLegacyViewerVersion(json);
       return;
     }
 
+    // TODO: viewer3x :)
+
     const dom = new DOM(document);
     const renderer = new ReportRenderer(dom);
 
diff --git a/package.json b/package.json
index 44f745514787..5af9601f5e0d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "lighthouse",
-  "version": "3.2.0",
+  "version": "4.0.0-alpha.0",
   "description": "Lighthouse",
   "main": "./lighthouse-core/index.js",
   "bin": {
diff --git a/proto/sample_v2_round_trip.json b/proto/sample_v2_round_trip.json
index 0934f7b49ceb..7fd302905eba 100644
--- a/proto/sample_v2_round_trip.json
+++ b/proto/sample_v2_round_trip.json
@@ -3289,7 +3289,7 @@
             "warningHeader": "Warnings: "
         }
     }, 
-    "lighthouseVersion": "3.2.0", 
+    "lighthouseVersion": "4.0.0-alpha.0", 
     "requestedUrl": "http://localhost:10200/dobetterweb/dbw_tester.html", 
     "runWarnings": [], 
     "timing": {