I think a lot of people will wait until the summer/early fall so they can study over the summer.
I agree that it'll mean more to get your apps in early...I know a lot of people who procrastinated in taking the MCAT this August when they originally intended to do it in April (even though they knew it would affect their chances this cycle), so I can only imagine how much people are going to put it off once they feel they have many more options. I mean, even if you *are* ready for the MCAT you don't feel ready, and getting an extra few weeks will seem really appealing to some....