A small new build was pushed to the patch 3.1.2 PTR today. The majority of the changes were relatively minor, but one is headline-worthy: the Arms Warrior talent Juggernaut now gives your next Slam or Mortal Strike an additional 25% chance to critically hit if used within 10 sec, down from 100% chance. Forum posters have been asking for a Juggernaut nerf quite vocally recently; they ought to be pleased with this one. Warriors also got a second small nerf: the Glyph of Rapid Charge is being changed from a 20% cooldown reduction (3 seconds) to a 7% reduction (1 second).
Other changes included some small tweaks to the Ulduar encounters Iron Council and General Vezax. Auriya's cats took a good hit from the nerf bat, with the damage from their Savage Pounce ability being cut in half. Finally, Priests' Divine Hymn, which was completely reworked in patch 3.1, had its bonus healing to affected targets nerfed from 15% to 10%; I never use the spell, so I don't much care.