Unlike tech like PhysX, Shadowplay or GeForce Experience wich all worked flawlessly even since their behind-thedoors alphas, right? Seriously, I don't know where some people are going with this, AMD said Mantle official specifications won't be launched until Q3 2014 at it's earliest, untill then, untill they actualy have it defined to begin with, what do people expect? Does it work in D3D11? It does, Mantle is just some gravy (that will probably take a lot of time to taste just right and not ruing the other meals). And the ones with IT'S NOT OPEN blah blah blah's are the worst. It's like FORD having a prototype of their EcoBoost engines and every other car buyer out there complaining that they don't share their early-stage technology, thus it will suck for the end-consumer, which possibly would blow up their (other brand) cars, for the time being.