@Gator88NE If I had to guess, I would say the two extra weeks is to give wiggle room if there are issues with the common app. Two years ago at the UCF tour, admissions said it was on its second year with the common app and they recommended still using the UCF app because they had delays with the common app in the first year.
That being said, my guess is that there will be another spike in total applications this year because of the common app. It also appears to be another logistical/statistical move by UF to increase its total applicants so it will look more selective for the rankings – plus they make $35 per application.
And as you are suggesting, there will be a ripple effect for housing and financial aid.
I will leave the early action / early decision calendar juggling debate to you…