Add release schedule.

PiperOrigin-RevId: 264604037
Change-Id: I0a8e083bd9af84479733c1e0a1908227ed5cb185

README.md

@@ -12,3 +12,13 @@ The releases can be found under [java_tools/releases](https://github.com/bazelbu
 starting with java_tools javac11 v4.0.
 For previous releases see the issues marked with
 [the release label](https://github.com/bazelbuild/java_tools/issues/15).
+
+If you're interested in the release process please see [docs/release.md](docs/release.md)
+
+# Release Schedule
+
+A new `java_tools` for the javac version used by bazel is released monthly.
+The first RC should be cut at least 7 days before the bazel release, around the
+25th day of the month.
+
+See [upcoming scheduled releases](https://github.com/bazelbuild/java_tools/issues?q=is%3Aopen+is%3Aissue+label%3Arelease).