Windows Phone 7 is RTM'd, now you can check out Windows Phone 7 Unleashed event for everything you need to know to develop for WP7. The first half of this deep dive event is lecture and hands on lab. At the half point mark of the day, you'll have a solid foundation for building WP7 apps.
Prerequisites: This event is a bring your own laptop event. Wireless internet will be available and you must have a laptop capable of connecting to wireless as no hard wired connection will be available; Download Windows Phone Developer Tools Beta before the event.
09/11/10, Irvine, CA, QuickStart – Register
09/11/10, Mountain View, CA, Microsoft Silicon Valley Campus – Register
09/11/10, Phoenix, AZ, Gangplank – Register
09/18/10, Albuquerque, NM, New Horizons Learning Center – Register
09/18/10, Inland Empire, CA, DeVry University – Register
09/25/10, Denver, CO, Microsoft Denver Office – Register