I buy the BIAB Windows everything pak upgrade every year in November (and now will be doing the same for the Mac version). In the past, the upgrade prices have never given credit for summer pak purchases -- the upgrade prices were the same whether you bought the summer paks or not. I'm guessing the answer is no, but will the 2010 upgrade prices give any credit if I've bought the summer paks? I'm hesitating to spend the $200 for both the Mac and Win summer paks knowing I'll get them as part of the everything pak upgrades in November (although the demos sound GREAT and it pains me to think of waiting until November to use them!).