Just got my email today from them. I only bought Medal of Honor (the quick cash in) for the chance of the BF3 Beta.
"Thank you for purchasing the Medal of Honor™ Limited Edition, which included access to the upcoming Battlefield 3 Beta! We are making great progress on Battlefield 3 and can't wait to share it with you. We will be rolling out the Beta during the month of September and you are still on our exclusive list to enter this Beta early. "
So Sept it is, will be playing this on the PC. Will leave MW3 for the console.