It isn't Google's fault that it's difficult to upgrade Android phones as it is the responsibility of the phone manufacturer to do that since such an upgrade requires an unlocking of sorts of their product, as well as them pushing the update through their servers. Manufacturers are realizing this and making it easier for themselves and their customers to upgrade.
And yes, there will be a standard for Android gaming devices, but that will be more about having the right amount of physical buttons and control options not OS version.
Engadget has a post up about Sony patent applications referencing a tocuhscreen that has certain buttons on the touchscreen sectioned off, and for controlling things 'through the screen' with a touchpad on the back. The article mentions that as a whole the patents sound like they would be more for a tablet than a gaming handheld, but with the PSPhone, is PSTablet really that absurd, especially with Sony hinting they were interested in such thing?
Engadget provides an example from MS of what of means to control things through the screen, but they used two touchscreens (on a PSP like device) where the top screen showed the fingers that were resting on the back of the device/second touch screen. That gives you a good point of reference for manipulating things on the screen without obscuring your view. I wonder if this will make it possible for direct multiplatform games between the PSP2 and 3DS.
Edit: Sony is coming out with unlimited music for the PSP using a cloud-based service called Qriocity (curiosity-took me a long while to get that). It's coming out for the current PSP, but will likely show up on PSP2/Phone. The usefulness will depend on depth of service (i.e building playlists, resume functions, music library etc.) but it sounds very cool.