I just don't understand the 2GB of RAM in 2010. That was the fundamental reason that stopped me from buying the previous MBA. It may be fine for just running the OS X, but I need to run Win 7 in VM. Maybe this would still work because it would be cached to flash storage? Anyway, for me this is a bummer.
Just noticed that it can go up to 4GB. That's better, but really the least amount that I was hoping for.