By the end of the year, T-Mobile plans to launch two new BlackBerry devices and three more Pearl colors. They also plan to do a big marketing blitz, to try and stop customers from going to AT&T for the iPhone 3G.

Here is what you can expect to see in the coming months:
- The BlackBerry Pearl 8120 will relased in three new colors, Tahitian Green, Indigo and Light Blue.
- In September or October, expect to see the BlackBerry 8220, which is a possible update to the Pearl.
- The Javelin, a 2.5G BlackBerry, is expected in late November. It will feature a small body and large high-resolution display.
- T-Mobile will also be making the move to OS. 4.5 for its devices.

We will give you more information as it comes available. In the meantime check out the T-Mobile BlackBerry Roadmap that BlackBerry News put together.