doc/next: add release note for new toolchain line behavior

The go command will now no longer update the toolchain line implicitly
to the local toolchain version when updating the go line. Document that
in a release note.

For #65847

Change-Id: I4e970d881a43c22292fe9fa65a9835d0214ef7bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/657178
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Reviewed-by: Alan Donovan <adonovan@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>

diff --git a/doc/next/3-tools.md b/doc/next/3-tools.md
index 5b52fe200df088d5a666215c551a7ac54d2f4a62..68017c8def1f88a046cf249db09b11e4f3683881 100644 (file)
--- a/doc/next/3-tools.md
+++ b/doc/next/3-tools.md
@@ -10,5 +10,11 @@ These new error reports may be disabled by setting
 `ASAN_OPTIONS=detect_leaks=0` in the environment when running the
 program.
 
+<!-- go.dev/issue/65847 -->
+
+When the go command updates the `go` line in a `go.mod` or `go.work` file,
+it [no longer](/ref/mod#go-mod-file-toolchain) adds a toolchain line
+specifying the command's current version.
+
 ### Cgo {#cgo}