Developer registration for the Windows Marketplace for Mobile has been officially launched, following last week’s announcement of what kind of apps will not be allowed in the store. Interested developers will have to pay $99 for a license that allows them to submit up to 5 applications for the Windows Mobile platform. For each app that is submitted and granted access to Windows Marketplace for Mobile, the developer will get 70% of the revenues that app generates. The developer will not get anything if the user returns the app; Microsoft has imposed a 24-hour return policy.

“Developers can now Register to participate in Windows Marketplace for Mobile. 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,” explains the Windows Mobile team blog.

Just as a little reminder, here are some app types that will not be granted access to windows Marketplace for Mobile:
- Apps that are used to enable VoIP (Voice over IP).
- Apps that can be used to change the default dialer provided in Windows Mobile, or change the SMS or MMS interface.
- Apps that will disable or change the default web browser, default search client and default media player the Windows Mobile operating system provides.
- Apps that exceed the 10 MB mark (OTA downloads only).
A full list of apps that will not be approved is available here.

In related news, over in the Apple camp the App Store is seeing new activity also. Recent reports have brought to light the fact that Apple wants all apps submitted to the App Store to work with iPhone OS 3.0, including the latest Beta version of the operating system, iPhone OS 3.0 Beta 5 (details here).