February 20th, 2017 - 7:00 PM ET/PT - 200 - Goodbye, Krabby Patty?: Mr. Krabs manufactures Krabby Patties on an industrial scale, but it drives a wedge between SpongeBob and Patrick.
February 25th, 2017 - 10:00 AM ET/PT - 207A - Mimic Madness: SpongeBob learns that imitation is the sincerest form of flattery.
February 25th, 2017 - 10:00 AM ET/PT - 207B - House Worming: When worms move in to SpongeBob's holes, he has to hide his disgusting new friends from everyone else.
Yes, after what feels like an eternity, Goodbye, Krabby Patty will be the last Season 9 episode. Jon Hamm will guest star as Don Grouper in the special. This is also the official 200th episode in production order.
EDIT: And according to Nickandmore, there will be two new episodes on February 25th at 10:00am, which are both from Season 10.