AWESOME news for Windows Phone 7 developers: 100 instead of 5 free app submissions.
This was just announced in the http://create.msdn.com newsletter:
More Free App Submissions
During the past months we have been working hard to improve our overall Windows Phone Marketplace experience based on the feedback we received from you and our partners. We heard from many of you that you wanted a higher limit on the maximum number of free apps you could submit for free.
We’ve heard you and are pleased to announce that we‘ve increased that limit from 5 to 100.
Great news, indeed!