WotC Has posted an update to some of hte more abused powers in the game.
Inlcudling Rain of Blows and Rightious Rage of Tempus. For Official Play
(RPGA) their is a grace period of sorts till August 4th when they will
be fully implemented. Until then players can use them either way.

Rain of Blows: Has been clarified so that if you have the dex and weapon
you get a third attack (as opposed an extra 2 attacks).

Rightious Rage of Tempus: If you dont crit, roll your bonus dice as if
you crited. if you crit, maximize your bonus damage.

Battlerager Vigor: You get temps if you hit plus any temps you would get
from that power normally, if you miss everyone with an invigorating
power you still get temps. When wearing light armor +1 damage, +2 with
specific weapons.

Duel Strike: similar to before but now you must attack a different
target with the off-hand attack instead of the same target. (can you say
improved defender marking ability vs a fighter version of the ranger?)

there are a couple of others but I'm not as familiar with them. But the
biggiest one is they are finally doing something about the Tempus
Channel divinity.