We wouldn’t call it exactly a secret, but we now have official confirmation that the Droid 2 goes on sale tomorrow for $199, after a $100 rebate. The Droid 2 retains the slide-out QWERTY keyboard of the original (though it’s supposedly improved) and packs a 3.7" display, 5MP camera, and 8GB of internal storage, supplemented by an 8GB SD card that comes in the box Official Statement From Motorola "With the new DROID 2, we’ve taken a big leap forward from the original DROID," said Bill Ogle, chief marketing officer of Motorola Mobile Devices and Home Business. "We listened to consumers and are providing an even more robust experience built…