Cingular Pushing PTT

I know I am not the only one who has noticed Cingular finally getting some decent push-to-talk phones for a change, but has anyone noticed that most of the top data devices are supporting PTT?  The recently released Blackberry Pearl was launched with push-to-talk as a Cingular exclusive feature.  The same applies to the 8525 which has a push-to-talk button with Cingy promising functionality due Q1.  Recently we found out that the Treo 680 will be receiving an update to include push-to-talk in its feature list, and the long awaited 4.2 OS upgrade for the 8700 can also be added to the pile. Should we expect the Blackberry 8800 to have it as well?  I guess we can get our emails and bleep it too.