While the ScummVM project was originally meant to cover 2D classics, ResidualVM was the companion project for 3D games and now they're going to combine into ScummVM.
In a fresh announcement, the ScummVM team mentioned how it's now been going for 19 years as the first-ever public release of ScummVM was back in 2001. Not a bad time to announce the merger of the two projects. This means that ScummVM will be embracing both 2D and 3D games, including RPGs and point-and-click adventures under one roof. They already shared a few developers so hopefully it will go smoothly.
Together though, it means ScummVM will add support for titles like: Grim Fandango, Escape from Monkey Island, Myst III - Exile, The Longest Journey and an unfinished engine for In Cold Blood, as well as Wintermute 3D engine.
Nice to see ScummVM going from strength to strength, after recently putting out the 2.2.0 release which added support for multiple Ultima titles and a serious classic from the 70s.