Considering some of the huge buffs that specs were already doing extremely well got, it seems unlikely they would revert this with no warning. In a vacuum this would by typical Blizzard but they are buffing the specs that are already doing the best right now and a 15% buff to Rip is not big overall DPS boost. Especially when you look at some of the itemization for next tier which from I have seen is poor for Feral. Also Feral does not seem to be scaling especially well again and it appears our secondary stats are weak compared to some specs.
I'm not even sure if just a Rip buff will be enough to compensate for the Legendary Gem changes. I think Warriors were specifically mentioned as scaling too well with the previous gem but the new Gem appears to hit Feral hardest of all.
Maybe it's some upgrades I got, or getting better at uptime, but every LFR boss today rip is my #1 damage source, and it wasn't before...Keeping rake/rip uptimes both above the 87% ish range and rip coming ahead. But this is alllll weird.