Don't worry too much about the short-term motion with respect to the official track... the current motion is so slow that some deviation from the short-term track won't make much difference down the line. The orientation of the upper-level winds will ultimately determine where this hits Florida.

The latest GFS is a little faster with the landfall in Florida and a little stronger with the low. The most significant change is that the 18Z GFS brings a very intense extratropical or hybrid system into New England in 72 hours. The previous run kept it well off of the coast.