The list of major changes introduced in Windows Mobile 6.0 for Pocket PC:
Revamped outlook, refined icons;
Totally re-mastered sound theme;
Increased interface speed;
Bundled IP-telephony (VoIP, SIP standard);
Smart Dial 2.0, fast search through contacts, call history; removable on-screen virtual keyboard;
Any tune can be assigned to any event;
Support for shortcuts in Outlook Mobile;
Full-fledged meetings arrangement system;
Support for HTML in messages;
Smart Filter – handy and fast search through messages;
Numerous MS Exchange 2007-tailored changes;
Integration with Windows Live online-services;
Marketplace – purchase, download, and install directly from the device;
Encryption – bundled memory card encryption
Office Mobile, extending Windows Live, release Windows Media Mobile 11
Mobile-review.com Review of Windows Mobile 6.0 for PPC (Crossbow) operating system