Paradox Interactive and Colossal Order lay out plans for the final bits of DLC for Cities: Skylines. A set of content packs and radio stations are coming on March 22nd and a second set of content packs and a "mini expansion" will follow in May. This comes amid the celebration of the eighth anniversary of the release of the city-builder and the preparations to launch its sequel. Cities: Skylines II is expected later this year, but support for the first game is expected to continue throughout 2023 as well. The Last Stops I Announcement Trailer illustrates the news. This post has the details. Here's an overview:

Paradox Interactive and Colossal Order today announced the roadmap for the last content packs and Radio Stations coming to Cities: Skylines as the team prepares for its highly-anticipated sequel. The final countdown starts with three Content Creator Packs and Radio Stations releasing on March 22 , followed by a second set of content packs and a mini expansion from Colossal Order in May. While the final expansion, Content Creator Packs, and Radio Stations are on their way, Colossal Order intends to continue general support for Cities: Skylines through the rest of the year.

“These eight years of Cities: Skylines have been incredible. It’s truly an amazing journey filled with heartfelt stories from our community and evolving the game into the genre-defining title it is today,” Mariina Hallikainen, CEO of Colossal Order, said. “As we look forward to the future, we are preparing to say our final farewells to Cities: Skylines with a strong line up of content throughout the Spring. Cities players have a lot to be excited about in the coming months with a lot of free content expanding upon existing content and a final expansion from us at Colossal Order.”