Microsoft's opened the floodgates for developers to submit applications for Windows Phone 7. Submissions were already possible for early registrants, but now everyone who has an application can submit.
Applications need to meet Microsoft's content and technical guidelines and can face rejection. Sounds familiar? However, Microsoft has said that they're making the process as transparent as possible and much easier to deal with than Apple's system.
So go ahead guys, get your apps out there.
SOURCE: App Hub