Effective: December 31, 2023, for new construction permits. Updates apply to permit applications filed on or after that date.
If you own a single-family home in Orlando, Kissimmee, or Sanford, the design wind speed for your zone was already 130-150 mph (3-second gust) under the 6th edition. The 7th edition kept that line. So the practical impact of "FBC 7th edition" on a Central Florida re-roof is mostly about Section 1518 (when does a re-roof trigger full-system compliance) and Section 1507 (what shingle products remain on the accepted list), not about stronger fasteners.
FBC requires the Florida Building Commission to adopt an edition triennially, and the effective dates are staggered: rural jurisdictions get a window before urban ones, and different counties opt into local amendments. The 6th edition (2020) was technically the active code from late 2020 through the 7th edition rollout window. If your county hasn't published a local amendment, the state FBC applies directly.
Florida Building Commission adopts orders are posted at https://floridabuilding.org/. DBPR adoption orders are at https://www.myfloridalicense.com/ (look under Statutes & Rules). The local jurisdiction's published amendment, if any, is at the permits office.