Yep, we've completed the phase 1 hard fork to move SPL to a new codebase and enable multi algo PoW/PoS/MN, but progress on phase 2 of the upgrade is moving slowly as I'm the only developer contributing to the project currently. I am more active in the project discord, so it's usually a better place to check for updates.

Alternatively, you can always find the latest release on GitHub:
https://github.com/simplicity-coin/simplicity/releases