As the image shows, the Treo 755p isn't supposed to have an antenna and it will have the same general form factor as the Treo 750 and Treo 680, models that are slimmer than earlier Palm smartphones. Of course, both of these are GSM devices, while the 755p will reportedly run on CDMA networks.
Details so far....
Information on the Treo 755p is very sketchy at this point. Virtually all that is known is that this smartphone will run the Garnet OS (formerly Palm OS Garnet) and will offer support for the 3G cellular-wireless networking standard EV-DO.
This device is expected to replace the Treo 700p.
The Treo 755p reportedly has a target release date of May 14, and it will initially be offered by Sprint.