Thanks to a recently leaked ROM, we recently discovered that the upcoming T-Mobile G2 HSPA+ will apparently run a stock version of Android 2.2 Froyo, without any 3rd party UI overlays included. No HTC Sense, no MotoBlur, no Touch Wiz, just the raw Android OS: the way Google intended.

If we assume that this is, indeed, the leaked shipping ROM of the G2 (which at this point is still a large assumption), we can learn a few things:

– Updates chould come more frequently for the G2 than phones running 3rd party UI overlays (though it has taken an independent developer to bring Froyo to the original G1)

– A new Qualcomm chip is going to power this device

It’s the new Qualcomm chip that is really interesting: the Qualcomm MSM7X30.

Depending on which flavor of this chip will be used, we could see 720p 30FPS video playback and recording, improved 3D performance, and possibly dual-mode HSPA+ and LTE.

For those of you who think all these potential new features could equate to shorter battery life, take comfort in knowing that this chip is one of Qualcomm’s most efficient yet.

(Thanks to Cyanogen for digging into this ROM and discovering the chipset reference!)