Let me just repeat some of the ESP related news that Tim Gregson (Beatle) recently posted on his blog.

ESP is now officially dead, MS has taken the ESP website offline. The SDK pages on the MSDN website are still there though. Tim also reported that he has left MS now and will be working as a consultant for Lockheed Martin on the Prepar3d program (which is what LM is doing with the ESP code they licensed). So good luck with the new job Tim and hopefully we will hear more about Prepar3d in the future.