Yes.The (W) Train Is gonna use the (R) Tracks At Times Sq 42 St.But between 12:00 Am And 2:00 Pm The (W) Is Gonna Use (M) And (F) Tracks to go to Forest Hills.
On The other hand these are the stations that are complete-
31 St(Astoria Ditmars)
36 St.
By The way No (7) Service On Northbound Track All (7) Trains Run On The Northbound Tracks