diff --git a/CHANGELOG.md b/CHANGELOG.md
index d9bc7db83b..2cffeba764 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 All notable changes to `dash` will be documented in this file.
 This project adheres to [Semantic Versioning](https://semver.org/).
 
+## [4.0.0rc0] - 2025-09-11
+- [#3398](https://github.com/plotly/dash/pull/3398) Modernize dcc.Input
+- [#3414](https://github.com/plotly/dash/pull/3414) Modernize dcc.Slider
+
 ## [UNRELEASED]
 
 ## Added
diff --git a/components/dash-core-components/package-lock.json b/components/dash-core-components/package-lock.json
index 6fbdb0f763..ad3783a774 100644
--- a/components/dash-core-components/package-lock.json
+++ b/components/dash-core-components/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "dash-core-components",
-  "version": "3.2.0",
+  "version": "4.0.0rc0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "dash-core-components",
-      "version": "3.2.0",
+      "version": "4.0.0rc0",
       "license": "MIT",
       "dependencies": {
         "@fortawesome/fontawesome-svg-core": "1.2.36",
@@ -26,7 +26,6 @@
         "node-polyfill-webpack-plugin": "^2.0.1",
         "prop-types": "^15.8.1",
         "ramda": "^0.30.1",
-        "rc-slider": "^9.7.5",
         "react-addons-shallow-compare": "^15.6.3",
         "react-dates": "^21.8.0",
         "react-docgen": "^5.4.3",
@@ -6480,11 +6479,6 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
-    "node_modules/dom-align": {
-      "version": "1.12.4",
-      "resolved": "https://registry.npmjs.org/dom-align/-/dom-align-1.12.4.tgz",
-      "integrity": "sha512-R8LUSEay/68zE5c8/3BDxiTEvgb4xZTF0RKmAHfiEVN3klfIpXfi2/QCoiWPccVQ0J/ZGdz9OjzL4uJEP/MRAw=="
-    },
     "node_modules/dom-helpers": {
       "version": "5.2.1",
       "resolved": "https://registry.npmjs.org/dom-helpers/-/dom-helpers-5.2.1.tgz",
@@ -12597,106 +12591,6 @@
         "safe-buffer": "^5.1.0"
       }
     },
-    "node_modules/rc-align": {
-      "version": "4.0.15",
-      "resolved": "https://registry.npmjs.org/rc-align/-/rc-align-4.0.15.tgz",
-      "integrity": "sha512-wqJtVH60pka/nOX7/IspElA8gjPNQKIx/ZqJ6heATCkXpe1Zg4cPVrMD2vC96wjsFFL8WsmhPbx9tdMo1qqlIA==",
-      "dependencies": {
-        "@babel/runtime": "^7.10.1",
-        "classnames": "2.x",
-        "dom-align": "^1.7.0",
-        "rc-util": "^5.26.0",
-        "resize-observer-polyfill": "^1.5.1"
-      },
-      "peerDependencies": {
-        "react": ">=16.9.0",
-        "react-dom": ">=16.9.0"
-      }
-    },
-    "node_modules/rc-motion": {
-      "version": "2.9.0",
-      "resolved": "https://registry.npmjs.org/rc-motion/-/rc-motion-2.9.0.tgz",
-      "integrity": "sha512-XIU2+xLkdIr1/h6ohPZXyPBMvOmuyFZQ/T0xnawz+Rh+gh4FINcnZmMT5UTIj6hgI0VLDjTaPeRd+smJeSPqiQ==",
-      "dependencies": {
-        "@babel/runtime": "^7.11.1",
-        "classnames": "^2.2.1",
-        "rc-util": "^5.21.0"
-      },
-      "peerDependencies": {
-        "react": ">=16.9.0",
-        "react-dom": ">=16.9.0"
-      }
-    },
-    "node_modules/rc-slider": {
-      "version": "9.7.5",
-      "resolved": "https://registry.npmjs.org/rc-slider/-/rc-slider-9.7.5.tgz",
-      "integrity": "sha512-LV/MWcXFjco1epPbdw1JlLXlTgmWpB9/Y/P2yinf8Pg3wElHxA9uajN21lJiWtZjf5SCUekfSP6QMJfDo4t1hg==",
-      "dependencies": {
-        "@babel/runtime": "^7.10.1",
-        "classnames": "^2.2.5",
-        "rc-tooltip": "^5.0.1",
-        "rc-util": "^5.16.1",
-        "shallowequal": "^1.1.0"
-      },
-      "engines": {
-        "node": ">=8.x"
-      },
-      "peerDependencies": {
-        "react": ">=16.9.0",
-        "react-dom": ">=16.9.0"
-      }
-    },
-    "node_modules/rc-tooltip": {
-      "version": "5.3.1",
-      "resolved": "https://registry.npmjs.org/rc-tooltip/-/rc-tooltip-5.3.1.tgz",
-      "integrity": "sha512-e6H0dMD38EPaSPD2XC8dRfct27VvT2TkPdoBSuNl3RRZ5tspiY/c5xYEmGC0IrABvMBgque4Mr2SMZuliCvoiQ==",
-      "dependencies": {
-        "@babel/runtime": "^7.11.2",
-        "classnames": "^2.3.1",
-        "rc-trigger": "^5.3.1"
-      },
-      "peerDependencies": {
-        "react": ">=16.9.0",
-        "react-dom": ">=16.9.0"
-      }
-    },
-    "node_modules/rc-trigger": {
-      "version": "5.3.4",
-      "resolved": "https://registry.npmjs.org/rc-trigger/-/rc-trigger-5.3.4.tgz",
-      "integrity": "sha512-mQv+vas0TwKcjAO2izNPkqR4j86OemLRmvL2nOzdP9OWNWA1ivoTt5hzFqYNW9zACwmTezRiN8bttrC7cZzYSw==",
-      "dependencies": {
-        "@babel/runtime": "^7.18.3",
-        "classnames": "^2.2.6",
-        "rc-align": "^4.0.0",
-        "rc-motion": "^2.0.0",
-        "rc-util": "^5.19.2"
-      },
-      "engines": {
-        "node": ">=8.x"
-      },
-      "peerDependencies": {
-        "react": ">=16.9.0",
-        "react-dom": ">=16.9.0"
-      }
-    },
-    "node_modules/rc-util": {
-      "version": "5.38.1",
-      "resolved": "https://registry.npmjs.org/rc-util/-/rc-util-5.38.1.tgz",
-      "integrity": "sha512-e4ZMs7q9XqwTuhIK7zBIVFltUtMSjphuPPQXHoHlzRzNdOwUxDejo0Zls5HYaJfRKNURcsS/ceKVULlhjBrxng==",
-      "dependencies": {
-        "@babel/runtime": "^7.18.3",
-        "react-is": "^18.2.0"
-      },
-      "peerDependencies": {
-        "react": ">=16.9.0",
-        "react-dom": ">=16.9.0"
-      }
-    },
-    "node_modules/rc-util/node_modules/react-is": {
-      "version": "18.2.0",
-      "resolved": "https://registry.npmjs.org/react-is/-/react-is-18.2.0.tgz",
-      "integrity": "sha512-xWGDIW6x921xtzPkhiULtthJHoJvBbF3q26fzloPCK0hsvxtPVelvftw3zjbHWSkR2km9Z+4uxbDDK/6Zw9B8w=="
-    },
     "node_modules/react": {
       "version": "16.14.0",
       "resolved": "https://registry.npmjs.org/react/-/react-16.14.0.tgz",
@@ -13239,11 +13133,6 @@
         "node": ">=0.10.0"
       }
     },
-    "node_modules/resize-observer-polyfill": {
-      "version": "1.5.1",
-      "resolved": "https://registry.npmjs.org/resize-observer-polyfill/-/resize-observer-polyfill-1.5.1.tgz",
-      "integrity": "sha512-LwZrotdHOo12nQuZlHEmtuXdqGoOD0OhaxopaNFxWzInpEgaLWoVuAMbTzixuosCx2nEG58ngzW3vxdWoxIgdg=="
-    },
     "node_modules/resolve": {
       "version": "1.22.10",
       "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.22.10.tgz",
@@ -13647,11 +13536,6 @@
         "node": ">=8"
       }
     },
-    "node_modules/shallowequal": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/shallowequal/-/shallowequal-1.1.0.tgz",
-      "integrity": "sha512-y0m1JoUZSlPAjXVtPPW70aZWfIL/dSP7AFkRnniLCrK/8MDKog3TySTBmckD+RObVxH0v4Tox67+F14PdED2oQ=="
-    },
     "node_modules/shebang-command": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/shebang-command/-/shebang-command-2.0.0.tgz",
diff --git a/components/dash-core-components/package.json b/components/dash-core-components/package.json
index ec3f42759b..8ade56a445 100644
--- a/components/dash-core-components/package.json
+++ b/components/dash-core-components/package.json
@@ -1,6 +1,6 @@
 {
   "name": "dash-core-components",
-  "version": "3.2.0",
+  "version": "4.0.0rc0",
   "description": "Core component suite for Dash",
   "repository": {
     "type": "git",
@@ -53,7 +53,6 @@
     "node-polyfill-webpack-plugin": "^2.0.1",
     "prop-types": "^15.8.1",
     "ramda": "^0.30.1",
-    "rc-slider": "^9.7.5",
     "react-addons-shallow-compare": "^15.6.3",
     "react-dates": "^21.8.0",
     "react-docgen": "^5.4.3",
diff --git a/components/dash-html-components/package-lock.json b/components/dash-html-components/package-lock.json
index 0f1146e149..72b5dc101b 100644
--- a/components/dash-html-components/package-lock.json
+++ b/components/dash-html-components/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "dash-html-components",
-  "version": "3.0.4",
+  "version": "4.0.0rc0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "dash-html-components",
-      "version": "3.0.4",
+      "version": "4.0.0rc0",
       "license": "MIT",
       "dependencies": {
         "prop-types": "^15.8.1",
diff --git a/components/dash-html-components/package.json b/components/dash-html-components/package.json
index f299f769d0..64bfb4bfe2 100644
--- a/components/dash-html-components/package.json
+++ b/components/dash-html-components/package.json
@@ -1,6 +1,6 @@
 {
   "name": "dash-html-components",
-  "version": "3.0.4",
+  "version": "4.0.0rc0",
   "description": "Vanilla HTML components for Dash",
   "main": "lib/index.js",
   "repository": {
diff --git a/components/dash-table/package-lock.json b/components/dash-table/package-lock.json
index aba131bb27..cf01c9941d 100644
--- a/components/dash-table/package-lock.json
+++ b/components/dash-table/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "dash-table",
-  "version": "6.0.4",
+  "version": "7.0.0rc0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "dash-table",
-      "version": "6.0.4",
+      "version": "7.0.0rc0",
       "license": "MIT",
       "devDependencies": {
         "@babel/cli": "^7.28.0",
diff --git a/components/dash-table/package.json b/components/dash-table/package.json
index c37cbc5866..a000b46701 100644
--- a/components/dash-table/package.json
+++ b/components/dash-table/package.json
@@ -1,6 +1,6 @@
 {
   "name": "dash-table",
-  "version": "6.0.4",
+  "version": "7.0.0rc0",
   "description": "Dash table",
   "repository": {
     "type": "git",
diff --git a/dash/dash-renderer/package.json b/dash/dash-renderer/package.json
index 472211625e..117c505858 100644
--- a/dash/dash-renderer/package.json
+++ b/dash/dash-renderer/package.json
@@ -1,6 +1,6 @@
 {
   "name": "dash-renderer",
-  "version": "2.2.0",
+  "version": "3.0.0rc0",
   "description": "render dash components in react",
   "main": "build/dash_renderer.min.js",
   "scripts": {
diff --git a/dash/version.py b/dash/version.py
index 11731085c0..9790849fec 100644
--- a/dash/version.py
+++ b/dash/version.py
@@ -1 +1 @@
-__version__ = "3.2.0"
+__version__ = "4.0.0rc0"
diff --git a/tests/async_tests/test_async_callbacks.py b/tests/async_tests/test_async_callbacks.py
index 13cb8418f9..dcff8b960a 100644
--- a/tests/async_tests/test_async_callbacks.py
+++ b/tests/async_tests/test_async_callbacks.py
@@ -102,9 +102,8 @@ async def update_input(value):
 
     assert call_count.value == 1, "called once at initial stage"
 
-    pad_input, pad_div = dash_duo.dash_innerhtml_dom.select_one(
-        "#output > div"
-    ).contents
+    pad_input = dash_duo.dash_innerhtml_dom.select_one("#output input")
+    pad_div = dash_duo.dash_innerhtml_dom.select_one("#output #sub-output-1")
 
     assert (
         pad_input.attrs["value"] == "sub input initial value"