Android & Linux

I'm not sure what they're being high-profile has to do with anything... it seems to me that they should be especially pressured to push stuff upstream because, 1) they have gajillions of dollars and huge kernel experience, they know better and have no excuse, and 2) unlike most embedded systems, we're not just talking about a few hacked-together drivers for a one-off device, we're talking about a widely distributed fork of the kernel and its userspace ABI.