The 1.68.0 pre-release is ready for testing. The release is scheduled for March 09. Release notes can be found here.
You can try it out locally by running:
RUSTUP_DIST_SERVER=https://dev-static.rust-lang.org rustup update stable
The index is https://dev-static.rust-lang.org/dist/2023-03-06/index.html.
The release team is also thinking about changes to our pre-release process: we'd love your feedback on this GitHub issue.
It seems like the change mentioned in Updating the Android NDK in Rust 1.68 | Rust Blog is not mentioned in the release notes.
Testing with the 1.68.0 pre-release version of rust, I can confirm that my project targeting Android API level 17 and NDK version 21 no longer compiles.
Thanks for flagging this. I'd be happy to see a PR to amend the release notes, though that won't happen in time for the release tomorrow.
We'll also include an explicit mention in the blog post itself though, which should hopefully remind folks.