Yep, the only thing changing in summer 2025 is beasts, bonesplitters and wizardcast won't be supported for GW official events and go into legend but they stated that all will receive rule and balance update through the entire edition.
My thoughts on it is, there were 3 factions in dire need of a make over.
Skaven as we know are coming very soon which leaves beasts and ogors.
Of the 2 remaining factions, I see beasts as most in need of a complete rework and with them being in TOW there is a opportunity to give them a digital battletome for this edition which gives time to do a complete redo of the range and solidify them into AoS without any warhammer hold overs.
I think we'll see ogors long before beasts reappear and I wouldn't be surprised to see a 2nd wave of kruleboyz which will fill the savage monster killer slot left by bonesplitters.