The word from the guys over at the BGR is that T-Mobile is preparing to launch the follow up to the T-Mobile G1, and is the T-Mobile G1 v2, which is a retooled version of the original Android smartphone.
The T-Mobile G1 v2 does away with the “chin” of the original and gone is the unique sliding mechanism and is replaced by the more standard type of sliding mech.
Personally I think the losing of the T-Mobile G1’s “chin” and slide mechanism turns it into just another ordinary sliding QWERTY smartphone, as there’s no real stand-out design to set it apart from the multitude of others.
Anyway, the T-Mobile G1 v2 is expected to be available in October with a price tag of $148 based on a two year contract via Wal-Mart.