The Boy Genius got his hands on an internal AT&T doc which proclaims OS4.5 is targeted to launch/be available mid-September for existing customers and will begin shipping on new handhelds come mid-October. It looks like some handhelds are going to be left off this rollout though - this document shows support for only the BlackBerry 8820, Curve 8310/8300 and Pearl 8120. I can't help but think there must be a LOT of 8800 and Pearl 8100 users (8700 too!) who would like to see 4.5 for their devices asap.
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