Samsung Vibrant on T-Mobile

Now that the phone has been spotted with a T-Mobile part number and some specific T-Mobile apps, does anyone know of a phone that has gotten so specific to a carrier and then not been released?

the first Android carrier has an Android-powered super phone. The Samsung Vibrant will be T-Mobile's top-of-the-line smartphone when it launches on July 21, and I got some hands-on time at Samsung's Galaxy S launch party.
T-Mobile brought Android to the U.S. market in September 2008 with the G1 phone made by HTC. But as Sprint and Verizon ramped up with 1-GHz Android super phones, T-Mobile made a critical miscalculation, throwing its lot in with Google's failed Nexus One direct-sales strategy. The Vibrant evens the playing field again.
The new phone is part of Samsung's Galaxy S line, a sextet of 1-GHz, Android 2.1-powered smartphones coming to six different carriers in the U.S.: AT&T, Cellular South, Sprint, T-Mobile, US Cellular, and Verizon Wireless. The models all share 1-Ghz Samsung Hummingbird processors, 4-inch 854-by-480 Super AMOLED screens and 5-megapixel cameras, but they have different body styles and software builds.

 The Vibrant is a traditional slab-style touchscreen smartphone. I like its body the least of Samsung's various slabs, because the plastic on the back feels a bit cheap and greasy. There are four touch buttons below the big, super-bright screen.
T-Mobile's software build really shows off the high-end graphics processing capabilities of the new Hummingbird CPU. For example, T-Mobile includes the game Sims 3. I played it for a few minutes and was very impressed by the smoothness of pivoting around the game's 3D layouts. A full copy of the movie "Avatar," in 480p format to fit the phone's screen, is also included on the phone, and it looked sharp and smooth on the Super AMOLED.
More video and TV content will come from Samsung's upcoming Media Hub store, which was present on the Vibrant I tried, but not yet fully operational.
Like the other Galaxy S-class phones, the Vibrant runs Android 2.1 with Samsung's TouchWiz 3 overlay. Samsung said that an Android 2.2 update with Adobe Flash would come to the Vibrant, but T-Mobile wouldn't commit to a specific date.