BlackBerry 8820 on AT&T next month?

Sources are telling us that RIM's upgraded 8800, the 8820, will finally be ready for AT&T come the 15th of September. As a refresher, the 8820 adds WiFi to the 8800's buttoned down, all-business spec sheet, but it turns out there's a very sneaky catch: WiFi won't be usable unless the subscriber hooks up a data plan. We're guessing this'll be hacked in all of about 15 minutes, but yeah, buyer beware. AT&T will be touting the 8820 as rocking twice the battery life of Verizon's 8830, so at least you'll be able to curse the data lockdown for twice as long before you run out of juice.

[Thanks, anonymous tipster]