With
the latest update to
http://developer.windowsmobile.com, Microsoft now allow developers to
register to participate in Windows Marketplace for Mobile. According to
Microsoft's Windows Mobile Team blog, this marks another milestone in providing
Windows Mobile Developers a clear path to develop, test, certify and distribute
their Windows Mobile applications via the Windows Marketplace for Mobile.
Throughout the registration process, links to key documentation for distributing
apps through Windows Marketplace for Mobile are provided.

While Windows Marketplace for Mobile isn't yet operating, it's expected it
will be launched together with the release of Windows Mobile 6.5.
Cheers ~ Arne