I've updated my #postmarketOS devices to v25.06 already.

If anyone's wondering how to migrate from OpenRC to Systemd from an existing installation, it can be done like this (here be dragons!):

# echo "https://mirror.postmarketos.org/postmarketos/extra-repos/systemd/v25.06" | tee -a /etc/apk/repositories
# apk update -Ua
# apk add postmarketos-base-systemd
# reboot now

I've tested this on installations using #Phosh and #Gnome desktop.

The team doesn't support this migration officially, though. Common warnings apply; do your backups, etc.