This is the new stable base of Fedora. The distros you mentioned are forks of Fedora.

In a practical sense, this means most of the big changes will eventually make their way to the forks, though when and how these changes are incorporated depends on several things, including but certainly not limited to who is on what development teams, what these changes actually entail and if they are still in alignment with the specific downstream distro's aims, and many other things I am too ignorant to know of myself.

The beauty of Linux is that you can check it out for yourself with minimal fuss if you're so inclined. Live USB booting is a pretty slick way to experience an OS without committing to it entirely, and I can't name a distro that is going to give you a hard time with any sort of dual boot.

Fedora Silverblue 45 is already available

https://fedoraproject.org/atomic-desktops/silverblue/download

Aaand it’s here.

After a ujust update, rpm-update status reports

State: idle
Deployments:
  ostree-image-signed:docker://ghcr.io/ublue-os/bazzite:stable
                   Digest: sha256:9ef3035588c6760e96c5064a1920db35c012c6c8e7d20ac6c1c31a04ed682e0b
                  Version: 45.20261104 (2026-11-04T00:33:01Z)
            SecAdvisories: 4 unknown severity, 6 low, 15 moderate, 9 important
                     Diff: 2626 upgraded, 14 downgraded, 148 removed, 78 added

● ostree-image-signed:docker://ghcr.io/ublue-os/bazzite:stable
                   Digest: sha256:ee82a885dbb77cd4604a5ffa8278a0eef0bc84d16850045c7b9d847729da9949
                  Version: 44.20261026 (2026-10-26T20:06:36Z)

  ostree-image-signed:docker://ghcr.io/ublue-os/bazzite:stable
                   Digest: sha256:d1617c7098adb290bdf37e1b6661fa68467fced5771336425cfa985db4ded7e6
                  Version: 44.20261023 (2026-10-23T16:31:37Z)

So the last 44 is 1 (0 base) and I do a sudo ostree admin pin 1 before rebooting. It’s not that I distrust Bazzite or Fedora before them, it’s that they really can’t test against all the weird and wonderful hardware out there, and you might only pick up a subtle flaw a week or two in. A couple of weeks from now I’ll do a sudo ostree admin pin -u 2 to remove it (there’ll be 3 deployments until then)