I saw a new Citi bike station on upper east side 85th street today. Don't know how long it has been there, probably not in use yet, but did see 3 Citi bikes parked at the station and a worker working there.
Looks like soon one can travel much of Manhattan by Citi bike between uptown and downtown, though not sure about such neighborhoods like Harlem and far north.
There's been quite a lot in the news about this. They're getting close to finishing the first phase of expansion of the system in Queens, Brooklyn, and Manhattan up to 86th St. You can see a map of the system here, with planned and active stations; the Upper East and West Sides are the last of it, and they look to be about half done:
https://member.citibikenyc.com/map/