The B9 holes #10-18 are now officially open and playable. With the exception of Hole #10, the B9 currently has only 1 tee box per hole (Long/Black). Short/Green tee boxes may be added in the future.
The B9 layout is more challenging and lengthy than the F9 holes #1-9 and is geared more for intermediate+ players.
For anyone who played Holes #10-12 last year, note that Holes #10 and #11 have been combined to form one new Hole #10 with three tee boxes, Long/Black, Alternate and Short/Green. The former #10 basket has been removed and the former #11 basket is now the designated #10 basket. The three Hole #10 tee box options are well marked on the tee box signs.