According to the MTA:
F Jamaica-bound trains are rerouted via the E after 47-50 Sts to Roosevelt Av Late Nights, 11:45 PM to 5 AM, Mon to Fri, Nov 28 - Dec 2The Roosevelt Island Operating Corp (RIOC) adds:
No Jamaica-bound service at 57 St, Roosevelt Island, and 21 St-Queensbridge. No service at Lexington Av/63 St.
The MTA has issued a weeknight service advisory for the F train, which may affect travel plans. Please plan your travel accordingly and visit mta.info or call 511 for more information. For electronic updates on F Train service, sign up for MTA Alerts at mymtaalerts.com.