Didn't someone post a facebook update from Harvey in which he said that he hadn't signed anything yet and that it wasn't a done deal?
Either way, I highly doubt they'll close Jan. 18th. However, I imagine their closing will have to depend on whenever GUYS & DOLLS (or another production) books the theatre and expects to start running.
"Some people can thrive and bloom living life in a living room, that's perfect for some people of one hundred and five. But I at least gotta try, when I think of all the sights that I gotta see, all the places I gotta play, all the things that I gotta be at"