T-Mobile earlier this week teased with an image of the T-Mobile G2, the successor to the T-Mobile G1 which was the first phone to feature Google's Android OS.  Much has changed since T-Mobile released the G1 in October 2008.  Today, Android is one of the top players in the smartphone market. 

Contrary to our hopes, it appears that the G2 is not the HTC Glacier, the handset leaked by a T-Mobile employee earlier this month.  Engadget, which has become very good of late at getting their hands on prototype/unreleased handsets, obtained pictures of the elusive handset. 

The pics reveal it to be an American version of the unreleased international HTC Vision.  The Vision is features a slide-out QWERTY keyboard that's roughly half the size of the phone's face.  The phone is expected to feature Android 2.1 at launch. 

Rumors that the unreleased Vision had a 4.3-inch screen appear to be dashed.  The phone actually features a 3.7-inch screen using HTC's SuperLCD technology (a new form of LCD display that reportedly rivals OLED units).

That makes it look increasingly likely that other rumors about the Vision -- a dual core Qualcomm processor, 16-megapixel camera, and 1280x800 display -- are incorrect.

As it is, the phone will probably be a more homely successor to the myTouch 3G Slide, with subtle improvements.  Still for T-Mobile subscribers looking for a physical-keyboard equipped Android smart phone, the G2 seems like a decent value proposition.

In other Android news, an update to Android 2.2 Froyo has leaked for the Droid X.  The Droid X, which was launched in July, was supposed to not receive the update until September.  Indeed, that will likely be the timeframe that the update arrives over the air, but until then users of both rooted and unrooted handsets can get a test build leaked from Verizon.  The update is currently hosted on My Droid World and can be found here.  The site appears overwhelmed with traffic currently and is timing out.