For those using Windows Mobile 6 and 6.1, Microsoft also announced that the online store will be accessible for devices using those OS starting at the end of the year. That means that 30 million devices could be browsing the online app store by the end of 2009.
Microsoft also announced a special category for business users, the Windows Marketplace Business Center, which will be a place in the Windows Marketplace where business users can download mobile business tools. Among the companies offering such business tools will be Ilium Software, Pyxis Software and Formotus.
source: Microsoft via EngagdgetMobile