There's been some talk about the HSPA+ HTC G2 being released in September, and TmoNews has got hold of some screenshots that puts the date as September 29 for the release of the Vanguard. What does the Vanguard have to do with the G2? I'm glad you asked. If you rip open the leaked G2 ROM we saw recently (or grab it already done for you here), you will see references to the Vanguard, such as in the devices name for the static wallpapers (also pulled out for you here).
If things don't change (and they often do), look for the G2, codenamed the Vanguard, running stock Froyo, with an all new chip on the 29th of September. So who's excited for this besides me? [TmoNews]