T-Mobile just posted up the teaser site for their first HSPA+ phone, the G2. Previous leaks of T-Mobile’s roadmap lead us to think that it will be a HTC Android device launching sometime in September. While the people at Engaget seem to think the smokey silhouette above looks like the myTouch HD that has been leaked previously, I think it better resembles another leak, the HTC Blaze. Whatever it is, it’s coming soon and should bring a hot piece of hardware to T-Mobile. While you wait, check out the G2′s teaser site and feel free to sign up for updates if you’re into that sort of thing. Otherwise, we’ll keep you posted.