Apologize if this was already mentioned elsewhere.  

Will ULS3 work with any HD driver (e.g. ICD, HD Driver, Atari's, etc)?

I am really excited about the ability to exit a game.   Would make it great for me to make a menu front end to select various games and launch them, and be able to come back to the menu when the game is exited.

Everything about ULS3 sounds awesome.  Looking forward to its release!  Keep up the great work guys.