"Still, developers were provided a general overview of the next version of this OS. Pocket PC 2003, codename Ozone, will primarily be a bug-fix release for Pocket PC 2002 with few enhancements.
Developers will have access to new tools to allow them to build applications that take fuller advantage of the XScale processors found in most of today's handhelds. However, these applications will not run under Pocket PC 2002, according to reports."