The eye appears to be outside the Cuban Keys now. It had been following the Keys on a WNW heading.
https://www.wunderground.com/cat6/irma-pounding-cuba-cat-3-likely-be-cat-3-or-4-florida
Three of the four most expensive U.S. hurricanes on record dropped by two Saffir-Simpson categories before making landfall: Katrina came ashore as a Cat 3, Sandy was a post-tropical cyclone near minimal hurricane strength, and Ike was a Cat 2. Do not fixate on Irma’s Saffir-Simpson rating.