Seems I was wrong, cannot find the exact article I read but according to this:
http://wccftech.com/amd-readies-stea...ssors-q3-2014/ the Athlon X4 860K is for FM2+ whereas I remember reading it was for AM3+.
Too bad, Steamroller could have actually been a nice way to see the AM3+ platform go. Nothing ground breaking, but at least it would give it reason to exist until the next big core from AMD comes out in 2015/2016.
As for holding off, I'm on the same ship. Firmly waiting with my X4 960T until either DX12 and Mantle gives it a new life or AMD finally ships something worth buying.