The band hinted at the reveal in this tweet...
NYT classifieds...
NYT classifieds...-- Vampire Weekend
...and Pitchfork found it today's edition of the paper.

Via pitchfork.com
Later on, the band's label, XL, shared the album art...

...and here's the tracklisting.
Obvious Bicycle
Unbelievers
Step
Diane Young
Don't Lie
Hannah Hunt
Everlasting Arms
Finger Back
Worship You
Ya Hey
Hudson
Young Lion
So far, the only song from the album that have shared with the world is "Unbelievers," which they debuted on "Jimmy Kimmel Live" in October and have been playing at recent gigs in Australia.
View this video on YouTube
HT Amy Phillips at Pitchfork