So, as of the tweets/posts today, 5.2 is "aimed" at 26Feb. 2 weeks to get all of the tuning, PVE numbers passes, and proposed changes implemented and funtional.
As of PTR yesterday:
Prot: GC AS still not proc'ing off of CS/HotR, even though it should now be a chance proc off of CS, HotR, dodge, and parry.
Consecrate still not scaling with haste.
Ret: New Seal of Justice not working. Like, at all.
Still no love for any Ret survival, PVP viability, or even clarity on the SoJ change with regards to seal twisting in PVE.
All: t90 talents still not scaling with haste.
t90 talent GCDs still also not scaling with haste.
Sacred shield talent GCD not scaling with haste.