AT&T has announced the Samsung Propel Pro, a successor to their popular Samsung Propel messaging phone. The Propel Pro sports the same type of form factor with a slideout QWERY keyboard. But under the hood things have really gotten a make over. For starters, the new device is running on Windows Mobile 6.1 Standard. Other features include wifi, a speedy 528mhz processor, aGPS, A2DP stereo bluetooth, and a built-in 3-megapixel camera with autofocus. The phone will be available in April and will retail for $149.95 with contract. For a preview of the phone, check out the video below.