Indivisible [Official Site] looks really quite good, a nice colourful action-RPG from the creator of Skullgirls, due next year with Linux support and it has a new trailer.
Indivisible is a new, action-packed RPG from Lab Zero, creators of the critically acclaimed Skullgirls! Set in a huge fantasy world, Indivisible tells the story of Ajna, a good-natured tomboy with a rebellious streak who sets out on a quest to save everything she knows from being destroyed.
For those that missed it, the game was originally due out this year, but they recently announced they're delaying it until 2019. They actually hired more staff to help make it happen too. Seems like it's all going well even with a delay, hopefully it means a better game.
While the Steam store doesn't actually mention Linux support, it will be coming to Linux. They had a Linux build of the prototype back in 2015 and they also confirmed late last year, that they plan to have a Linux version at launch. The official site also has Linux clearly mentioned as a platform.
Anyway…check out the new E3 2018 trailer for it: