I think Fedora 42 is a little optimistic of a timeline, given the current state of the Cosmic DE, I wouldn't mind swapping my travel laptop (which just got a fresh re-install of the KDE spin of Fedora 41*) to a Cosmic DE spin of Fedora 43.
F42 Change Proposal: Fedora COSMIC Spin (self-contained)
https://discussion.fedoraproject.org/t/f42-change-proposal-fedora-cosmic-spin-self-contained/139532
*: I needed to do a fresh reinstall for several reasons, including clearing out some cruft left over from the original F39 install and undoing some oopsies from the past couple of weeks.