According to the MTA:

F Jamaica-bound trains are rerouted via E the after 47-50 Sts to Roosevelt Av

Weekend, 11:45 PM Fri to 8 PM Sat, Jun 10 – 11

No Jamaica-bound service at 57 St, Lexington Av/63 St, Roosevelt Island and 21 St-Queensbridge.

The Roosevelt Island Operating Corp ( RIOC ) adds:

The MTA has issued a weekend service advisory for the F train, which may affect travel plans. The Tram will run on a rush hour schedule from 7:00 AM until 10:00 PM to accommodate any increase in traffic. Please plan your travel accordingly and visit mta.info/weekender or call 511 for more information.

For electronic updates on F Train service, sign up for MTA Alerts at mymtaalerts.com.