eric0d We are aware of the upstream plan. We still ship Gnome 48 and it still supports X11. Gnome 49 will still support X11 (albeit hidden behind build flag now) and we intend to still ship it too. This ensure soft landing for any user that still hasn't moved to wayland (for whatever reason).
Solus Gnome has been default to Wayland for quite sometime now, whether it still ship X11 session doesn't really affect user experience that much. So, until upstream no longer supports it, we will still ship the X11 session.
Of course the plan can change, who knows 🙂