We first heard about the Samsung Exhibit 4G a few weeks ago and it looks like we'll be seeing the mid-range offering hitting T-Mobile shelves on June 8. Dealer price is set at $325, but you'll be paying less (and note the $50 rebate).
The Exhibit 4G features a 1GHz Hummingbird processor, 3MP rear camera, VGA front-facing camera and is also HSPA+ capable; it will be able to reach speeds exceeding 21mbps.
The Exhibit provides great value for someone who doesn't want to spend the money to get the Sensation. It's a solid device and will come at an affordable price on June 8.