Did some more digging and updated to Multiple. According to comments made by Driskel to SI, they actually want to pass more this year so their heavy running from 2012 isn't something they necessarily want to adopt as an identity.
Also keep in mind that "Spread" offense doesn't mean pass, it's just a generic term for the primary personnel group, but I agree that "Multiple" is a better fit. There are even "Spread Pro" sets that some teams run (Oklahoma). But even on defense it sounds like Florida could bounce between a 3-4 and 4-3 -- the main point is that no one really knows. Muschamp is pretty deceptive about what the team's alignments are going to be so we'll all learn once the season starts up.