Prepare release notes for 5.10 RC1

Author: sbrannen

documentation/src/docs/asciidoc/release-notes/release-notes-5.10.0-RC1.adoc

@@ -1,9 +1,17 @@
 [[release-notes-5.10.0-RC1]]
 == 5.10.0-RC1
 
-*Date of Release:* ❓
+*Date of Release:* July ❓, 2023
 
-*Scope:* ❓
+*Scope:*
+
+* New `@SelectMethod` support in test `@Suite` classes.
+* Various enhancements for discovery selectors for classes and methods, including
+  additional support for custom ClassLoader arrangements.
+* Improved `@TempDir` support for cleaning up files and directories on Windows.
+* Revised stack trace pruning support.
+* Various documentation improvements.
+* Minor changes and enhancements since 5.10 M1.
 
 For a complete list of all _closed_ issues and pull requests for this release, consult the
 link:{junit5-repo}+/milestone/69?closed=1+[5.10.0-RC1] milestone page in the
@@ -13,10 +21,6 @@ JUnit repository on GitHub.
 [[release-notes-5.10.0-RC1-junit-platform]]
 === JUnit Platform
 
-==== Bug Fixes
-
-* ❓
-
 ==== Deprecations and Breaking Changes
 
 * The `getMethodParameterTypes()` methods in `MethodSelector` and `NestedMethodSelector`
@@ -42,43 +46,25 @@ JUnit repository on GitHub.
 [[release-notes-5.10.0-RC1-junit-jupiter]]
 === JUnit Jupiter
 
-==== Bug Fixes
-
-* ❓
-
-==== Deprecations and Breaking Changes
-
-* ❓
-
 ==== New Features and Improvements
 
 * `@TempDir` can now be used as a meta-annotation in order to create custom _composed
   annotations_. See the `@JimfsTempDir` example in the
   <<../user-guide/index.adoc#writing-tests-built-in-extensions-TempDirectory, User Guide>>
   for details.
-* Lifecycle and thread-safety semantics are now documented for the `TempDirFactory` SPI.
+* `@TempDir` now successfully cleans up files and directories on Windows that are set to
+  read-only.
 * New `reason` attribute in `@Execution` which can be used to document the reason for
   using the selected execution mode.
 * The <<../user-guide/index.adoc#extensions-RandomNumberExtension, User Guide>> now
   includes an example implementation of the `RandomNumberExtension` in order to improve
   the documentation for extension registration via `@ExtendWith` on fields.
+* Lifecycle and thread-safety semantics are now documented for the `TempDirFactory` SPI.
 * The scope of applicability for `TestWatcher` implementations is now more extensively
   documented in the User Guide and Javadoc.
-* `@TempDir` now successfully cleans up files and directories on Windows that are set to
-  read-only.
 
 
 [[release-notes-5.10.0-RC1-junit-vintage]]
 === JUnit Vintage
 
-==== Bug Fixes
-
-* ❓
-
-==== Deprecations and Breaking Changes
-
-* ❓
-
-==== New Features and Improvements
-
-* ❓
+No changes.