MS released updated Marketplace guidelines for WP7. Here are the new guidelines:
Annual registration fee of $99
No limit to the number of paid apps submitted 5 free apps per registration, $19.99 each after that
Free registration to DreamSpark students (same unlimited paid and 5 free apps applies)
A new optional push notification service to help developers stay engaged with customers
A new optional Trial API – trials mean more customers try your app, and less likelihood that they return it. The length or type of trial is fully controlled by the developer
The ability to publish to all available Marketplace markets through a new “worldwide distribution” option, allowing developers to pay once and distribute broadly
Wider range of business models; free, paid, freemium and ad-funded
Equally important to many developers is what isn’t changing:
A revenue share of 70/30
Developers manage their business with Marketplace via the self service portal http://developer.windowsphone.com
Payout takes place monthly for developers that have earned more than USD$200 worldwide
Developers can make ad funded applications
All applications go through a process of technical and content certification
Marketplace offers support for credit card commerce, and where available mobile operator billing.
Microsoft continues its practice of publishing policies, guidelines, and submission process details to developers so they understand exactly how marketplace works.
The full list of Windows Phone Marketplace policies is now available here.