There are a couple of stories circulating about a preview of the next version of Windows Mobile. If you'd like to take a peak, the following links will provide you with a good flavor of what will be coming.
"A walk-through of the new Windows Mobile Pocket PC phone software has been created using an unofficial beta copy. Overall the new Operating System has a redesigned interface, improved applications and a few new programs. The phone part has been improved with a new dialer, caller-specific ringtones, and support for photo caller ID which will sync with Outlook contact photos. Microsoft has not yet announced this software, nor does it have an official name. Although features and menus are still subject to change, rumors are that the software is nearing completion, so the information and screen shots should be a fairly accurate portrayal of the final version."
Mobile-Review
PhoneScoop