12Z GFS has Irma staying north of the Caribbean, but a hurricane by this Saturday, and recurving, but gets very close to Bermuda September 10th as a major hurricane.
12Z Euro has it a Hurricane on Sunday also, clips the Northeast Caribbean islands as cat 2/3 next Wednesday, Over the VI and Puerto on Sep 7 as a major hurricane, and continues through the Southeast and Central Bahamas as a major 0n the 8 & 9th where the model run ends.
HWRF and HMON keep it north of the Caribbean islands.