Vampire Weekend perform onstage at the 2014 A+E Networks Upfront on May 8, 2014 in New York City.

Koenig says the new album's working title is Mitsubishi Macchiato, "for obvious reasons."

When Rostam Batmanglij announced he was leaving Vampire Weekend on Tuesday (Jan. 26), he said that he would continue to collaborate with the band's frontman Ezra Koenig on "future tracks" and "future Vampire Weekend songs." Now Koenig has spoken up, elaborating on Batmanglij's statement.

Rostam Batmanglij Leaves Vampire Weekend, But Hints Band Isn't Over

In a post to Instagram, Koenig detailed sitting down with Batmanglij a couple years ago and discussing the details of their creative partnership and whether it was dependent on being members of the same band.

"We both firmly agreed that nope, it was not," said Koenig. "In fact, we agreed that our collaboration was more important."

Batmanglij's explanation for leaving Vampire Weekend was that his identity as a songwriter and producer needed to stand on its own, untethered to any single project. The multi-instrumentalist produced Vampire Weekend’s first two albums and co-produced 2013's Grammy-winning Modern Vampires with Ariel Rechtshaid.

He has also worked with artists such as Carly Rae Jepsen, Charli XCX and Ra Ra Riot.

Watch Vampire Weekend's Ezra Koenig Do Surprise Chromeo Collab at Governors Ball

Koenig continued in his post, saying "I'm psyched about the work we've already begun for LP4 and I'm psyched to hear anything else Rostam is a part of.... For now in the Vampire Weekend universe, it's all about recording the next album. There will be a lot of familiar faces in the studio but also some fresh, new ones."

He added that the album's working title is Mitsubishi Macchiato, "for obvious reasons."

See his post and read the full statement here: