Microsoft Robotics Studio sees an updated community technology preview for October.  The release brings enhanced simulation support with a move from managed Direct X to the XNA Framework.  Multiple camera angles, rendered in different perspectives, can be simulated and controlled by a PC or even a wired Xbox 360 controller.  New tutorials have been added, as well.

Updates specific to the LEGO Mindstorms NXT:

We now support automatic download of the program loaded on the LEGO NXT brick to facilitate communication with your MSRS authored program. Now once you just set your BlueTooth connection between your PC and the LEGO NXT and you can just run your application. We have also added support for access to some the advanced commands that are available for the NXT.