Though the newer version of Sublime Text (Sublime Text 4) is released, the same version isn’t what’s available in Flathub (latest build is for com.sublimetext.three, Build 3211).
Flathub also only has x86 Builds and not ARM Builds. I think it would be nice, if someone would make a Flatpak (DEB-based) App available on Flathub for both x86(_64) and ARM(64), as that would give all distributions across platforms on both architectures accessibility to the app.