At the moment druid is arguably the best tank, and they took an adjustment with 7.1 in 4 % less damage reduction from thick hide (6% with legendary) as well as rage generation from moonfire.
Where Brewmasters got a stagger buff a few weeks back and now around a 4% dmg reduction buff plus making brewstache quite usefeul.
So all else equal we have definitely closed the gap on druids quite a bit. The other tanks remained largely the same save for a few things like DKs getting icebound fortitude again, pallies charges on shorter cooldown etc.
All in all I am happy with the changes, especially Brewstache, considering you use a brew probably around every ~8/9secs this is basically 10% more dodge around 50% of the time.