If you are already a T-Mobile customer, the word from tmonews is that you should soon receive an email from T-Mobile letting you know the T-Mobile myTouch 3G mini site is now live.
The T-Mobile myTouch mini site allows the potential customer to signup for notification as to the launch of the T-Mobile myTouch 3G handset, and it also state that T-Mobile myTouch 3G pre-orders should arrive by the 3rd of August.
Furthermore a scheduled press even in New York City on the 8th of July will formally introduce the T-Mobile myTouch 3G.