Arc System Works and publisher NeoPle announced a brand new fighting game Dungeon & Fighters (DNF) Duel, which is based off the popular online action RPG Dungeon Fighter Online. Alongside the trailer, there's also some commentary from Director Kodani on the upcoming title:

Considering how popular Dungeon Fighter Online is, especially in Asia, it makes sense that the IP would branch out into other genres. Neither a release date nor platforms has been revealed as of yet, but I'm sure that information will be coming up in the future.

This isn't Arc System Works first rodeo with a third party IP, as they also worked on Granblue Fantasy Versus. XSEED Games also revealed their partnership with Arc System Works for "ARCREVO America Online 2020," an online tournament which featured Granblue Fantasy: Versus and BlazBlue: Cross Tag Battle. Started in October 2020, the top two players in Granblue Fantasy: Versus and BlazBlue: Cross Tag Battle from each region were invited to take part in a special America VS Japan exhibition match planned for Spring 2021.

Producer Yuito Kimura and Director Tetsuya Fukuhara chatted about how they'd like to make more Granblue games.  However, they stated they can't work on too many projects simultaneously and first need to finish PS4 action RPG Granblue Fantasy Relink. The game might get ports to other platforms like Stadia, PC and PS5 too once the PS4 version is done. Granblue Fantasy Versus is available on PS4 and PC. You can read our review and our beginners' guide.

Arc System Works has also been hard at work developing Guilty Gear -STRIVE-. Recently  confirmed that the title will feature rollback netcode after much fan request. Most recently during the Japan Fighting Game Publisher's Roundtable livestream fighters Leo Whitefang and Nagoriyuki were announced for the title. Two other trailers revealed Ramlethal Valentine as well as Millia Rage and Zato=1. So far we know that the previously announced characters are the protagonist Sol Badguy and Ky Kiske, Axl Low and May, and Chipp Zanuff and Potemkin.