T-Mobile today introduced the T-Mobile Dash 3G, a long-awaited refresh of its predecessor, which we first reviewed more than two years ago. The Dash 3G joins this summer's hot parade of new cell phones, which began earlier this month with the launch of the Palm Pre and continues this week with the launch of the Apple iPhone 3G S and next week's launch of the second T-Mobile phone with Android. The Dash 3G will go on sale in stores in July.

The new Dash 3G is similar to the HTC Snap (available on Sprint and Verizon). It is the first 3G phone from T-Mobile to use the Microsoft Windows Mobile 6.1 Standard Edition operating system. The handset has evolved from its previous iteration to look sleeker and more smoothly designed. It replaces the previous model's five-way nav button and cluster of small nav keys beneath the display with a trackball and clearly defined, round nav buttons. The QWERTY keyboard appears roomy as well.

More details, including price, to come when available. What is known is that the Dash 3G has a QVGA (320 by 240 pixel resolution) display, integrated GPS, Exchange server support, microSDHC card slot, Bluetooth 2.0, and a 2-megapixel camera. These features are a boost over the previous version, but fall short of some of the beefier specs of phones like the Palm Pre or the iPhone 3G.