[7.x] Adds 7.10 security release notes (#345)

docs/getting-started/detections-req.asciidoc

@@ -51,6 +51,7 @@ these privileges must visit (click on) the *Detections* page:
 ** `.items-<kib-space>`
 +
 Where `<kib-space>` is the {kib} space name.
+* The ability to `view_index_metadata`.
 * If you want to allow the user to create rules as well as enable the
 Detections feature, {kib} space `All` privileges for the `Saved Objects
 Management`.

docs/release-notes.asciidoc

@@ -20,6 +20,62 @@ required to enable the UI.
 * <<post-upgrade-req, Enable the process analyzer>>. This is only required if you want to view
 <<alerts-analyze-events, graphical representations of process relationships>>.
 
+[discrete]
+[[release-notes-7.10.0]]
+== 7.10.0
+
+[discrete]
+[[breaking-changes-7.10.0]]
+==== Breaking changes
+
+*Signals template updated for rollover indices*
+
+The `create_index_route` now checks if the template needs to be upgraded
+before creating the index. If the index already exists and the template was upgraded,
+the index rolls over so that the write index has the upgraded mapping.
+This breaks the old mappings that have `risk_score mapped` as a keyword.
+In the new mapping, `signal.rule.risk_score` is a float.  After rolling over,
+there is a conflict between the old and new `signal.rule.risk_score` for some
+features, such as aggregations.
+
+This requires the `view_index_metadata` permission in Kibana. See ({pull}/80019[#80019]) for details.
+
+*Connect incident fields allowed when cases are sent*
+
+You can now specify connector incident fields when cases are sent. This includes:
+* Jira: issue type, priority, and parent issue in the case of a subtask.
+* IBM Resilient: issue types, and severity.
+* ServiceNow: urgency, severity, and impact.
+
+See ({pull}77327[#77327]) for details.
+
+[discrete]
+[[bug-fixes-7.10.0]]
+==== Bug fixes and enhancements
+* Adds Metadata and Discovery Analysis Jobs to Security Integration ({pull}76023[#76023]).
+* Improves Alert Telemetry for the Security app ({pull}77200[#77200]).
+* Allows passwords to be visible on security screens ({pull}77394[#77394]).
+* Groups features for role management ({pull}78152[#78152]).
+* Warns users when security is not configured ({pull}78545[#78545]).
+* Enhancements for saved object management workflows ({pull}75444[#75444]).
+* Adds EQL search strategy for security ({pull}78645[#78645]).
+* Fetches related events from specified devices ({pull}78780[#78780]).
+* Excludes cloud alias index from EQL query ({pull}81551[#81551]).
+* Telemetry: Displays collected security event sample ({pull}78963[#78963]).
+* Analyze Events: Requests data from new event API ({pull}78782[#78782]).
+* Detections: Handle conflicts on alert status update ({pull}75492[#75492]).
+
+[discrete]
+[[known-issues-7.10.0]]
+==== Known issues
+
+* If you edit a rule while that rule is running, the rule fails. Subsequent successful runs will retain the previous failure message ({pull}82320[#82320]).
++
+[role="screenshot"]
+image::images/detection-rule-failure.png[]
+
+
+
 [discrete]
 [[release-notes-7.9.1]]
 == 7.9.1
@@ -38,6 +94,7 @@ required to enable the UI.
 * Increases permissions granularity for the `.lists` system index
 ({pull}75378[#75378]).
 
+
 [discrete]
 [[release-notes-7.9.0]]
 == 7.9.0