OpenGL support from other manufacturers, and other possible future GPU additions

[Nintonito]

Two parts to this. Firstly, what other non-Nvidia manufacturers have GPU's with the hardware capabilities to run full OpenGL 4, and what manufacturers are actually semi-remotely likely to implement it? I know Qualcomm won't be doing it for 4xx, because it only goes up to AEP level features, but would 5xx be theoretically capable? I'm pondering this because I was debating what new mobile GPU's can actually bring (Adreno 5xx, Mali 9xx, PowerVR 7/8) and besides opening up full openGL (and unbreaking everything) I don't see what else they could offer beyond efficiency and raw speed. I'm just opening this up because Nvidia still isn't making huge progress with Tegra marketshare (and the N9 doesn't really count with the crippling drivers), so I'm holding out hope that another real alternative could come out for gamers.