This just came from HTC, directly from their twitter account only 5 minutes ago.
If you head on over to the link HTCdev.com, you can sign up to be part of the Sense developing community.
HTC is one of the fastest growing device manufacturers on the planet and with every new device come new opportunities for development. This site is being built by and for you, the developer, and it is dedicated to providing you with the tools, advice and community you need to pursue the possibilities.
The program hasn’t fully launched yet, but you can sign up and HTC will give you an alert when the program and the SDK are available for our wonderful developers to get cracking. I can’t wait to see what you amazing guys can do.