The second alpha version of Pop!_OS 24.04 LTS, which includes the new COSMIC desktop environment, has been released for testing.
COSMIC Epoch 1 (alpha 2)
A New Desktop Environment
We aim to liberate the computer with a new desktop environment powerful enough to build custom OS experiences — for users, developers, and makers of any device with a screen.
Alpha 2: What to Expect
As the second alpha version of COSMIC Epoch 1, it is incomplete. You’ll most certainly find bugs. Testing and bug reports are welcome and appreciated. New feature requests will be considered for Epoch 2, COSMIC’s second release.