Yesterday
Microsoft announced in their blog the release date for the final version of
Windows Phone 7 developer tools. They say that on 16th of September, we will be able to download them.
Source: The Windows Phone Developer Blog
The final tools will likely have some minor breaking changes from the Beta tools, so developers may have to fix some bugs that arise. The final tools will also include several highly requested Silverlight controls which will make it even easier for developers to deliver high quality Windows Phone 7 experiences. Also in the September 16th final release, the panorama, pivot and Bing maps controls will all be available to drop into applications.
I'm disappointed that nothing about sensors is mentioned. It's nice that we finally will be able to use official panoramic and pivot controls, but I expected more.