Granvir is a great looking 3rd person action roguelite mech-builder with co-op multiplayer, with a release date announced and a Steam Deck competition.
The developer has now set September 23rd for it to be released, and you can also try out the mini demo version in Granvir: Zero Front. The game will have Native Linux support at release too, so for fans of direct Linux support it's one for you to stick onto your wishlist.
More about it: "Granvir is an action roguelite featuring mech building. Players battle through a route of their choice reaching extraction and completing side objectives at the cost of valuable resources. Between battles, players can swap out parts for upgrades found on the battlefield and manage their campaign by taking on loans to afford ammunition, aiding the locals for support in battle and more."
Check out the most recent gameplay trailer below:

Direct Link
Along with putting up a release date, the developer is also giving away one 512GB Steam Deck LCD with a full copy of the game to play too. They're using Gleam for the competition, with multiple chances to increase your odds of winning. Details on that in the announcement.