I have been waiting for this for a while. I am developing some stuff for Windows Phone 7 Series for a few weeks, but because the tools only worked with the release candidate, I needed to do this within a VPC. Now I can use directly the power, and memory, of my development kit directly as this tools refresh now works with the RTM version of VS2010.
You can read more here http://windowsteamblog.com/blogs/wpdev/archive/2010/04/29/windows-phone-developer-tools-ctp-refresh.aspx
