Windows Mobile 5.0 is the base operating system for Pocket PCs, Pocket PC Phone Editions and Smartphones and a completely new developed operating system, based on Windows CE 5 which includes new, improved and enhanced applications as well.
First of all, the previously known Pocket XYZ applications are renamed to XYZ Mobile. Pocket Word is called Word Mobile, Pocket Internet Explorer is called Internet Explorer Mobile, etc. now.
Beside the pure operating system and application renaming, Windows Mobile 5.0 also includes many improvements as well as stronger User Interface update, compared to previous updates of Windows Mobile.
In addition, Windows Mobile 5.0 for Pocket PCs will support the same soft-key navigation as previously introduced with the Windows Mobile Smartphones. This means, Windows Mobile 5.0 based Pocket PCs can be operated either one or two handed but in any case it can be used without the stylus now.
The following slides gives you the best overview what's new and improved with Windows Mobile 5.0 (click the thumbnails to get a larger version)
Windows Mobile 5.0 requires new hardware, even if the current hardware would support WM 5.0 in general. The first expected Pocket PC to support Windows Mobile 5.0 is the previously announced T-Mobile MDA IV.
Cheers ~ Arne