The band announced on Twitter that Evolution will be released in the UK on November 5.
In a SoundCloud post, they said: "We've just landed and obviously all you guys know that our album name has been leaked a little bit sooner than we expected, Evolution.
"We're very excited about it and this is the album we wanted to make, we wanted to make this for our fans. We didn't go by any kind of guidelines or anything like that, we just made what felt right and we're really excited about it!"
A deluxe version of the album will include a second disc featuring bonus tracks, while a poster version of the LP - available for two weeks only - allows fans to have their name included in the artwork.
JLS recently teased that their new single is coming soon after shooting the video for the Evolution track.
Listen to JLS confirm their new album Evolution below: