The announcement was also made on reddit. Worth checking out.
The Haskell sub is probably the only one I visit nowadays, simply because it never disappoints. Haskell has such a kind, smart, diverse (as in, many people from entirely different backgrounds), and open community. That in and of itself is already a good reason to learn Haskell.
Go to your loved ones. Whisper sweet nothings into their ears. Remember where you were when types and kinds were unified.
See here for an HTML version of the release notes.