The Treo Pro seems to have disappeared from Palm.com

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The Palm.com has of course been mainly trafficking Palm's webOS devices -- the Pre and Pixi -- as of late, but until very recently, it still listed its last non-webOS device, the Window Mobile Treo Pro, a much older phone first outed in August of 2008. If you're hell bent, of course, there are still plenty of places to get one of these bad boys, so we're not going to sound the death knell yet -- but it will be missed.

Via Palm Info Center