doc: document new default for GODEBUG gotypesalias setting in release notes

For #65614.

Change-Id: I9487521817348053170da293c01ac55f6e3dcd20
Reviewed-on: https://go-review.googlesource.com/c/go/+/590895
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
TryBot-Bypass: Robert Griesemer <gri@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>

diff --git a/doc/next/6-stdlib/99-minor/go/types/cl-577715.md b/doc/next/6-stdlib/99-minor/go/types/cl-577715.md
new file mode 100644 (file)
index 0000000..939d5ac
--- /dev/null
+++ b/doc/next/6-stdlib/99-minor/go/types/cl-577715.md
@@ -0,0 +1,4 @@
+<!-- CL 577715, CL 579076 -->
+By default, go/types now produces [Alias] type nodes for type aliases.
+This behavior can be controlled by the `GODEBUG` `gotypesalias` flag.
+Its default has changed from 0 in Go 1.22 to 1 in Go 1.23.