Solasta: Crown of the Magister looks like a promising and ambitious project from the French developers Tactical Adventures. Devs already set up a Steam page but additional funding will be needed via Kickstarter from 3 September 2019.
Tactical Adventures are teasing Solasta: Crown of the Magister as a game with three main pillars that serve as selling points.
The first one is the verticality and high focus on 3D as opposed to 2D that turn-based tactics games have enjoyed for so long. Technically, Divinity: Original Sin 2 already explored this quite a bit but it sounds like Tactical Adventures are looking to really lean into verticality with emphasis on high ground, flying and literally controlling the battleground layout from above by toppling objects.
Light will be the second pillar since the game will unfold underground in dark ruins and caves. It will not only serve as a tool to see around the place but will have tactical values such as utilising the light against creatures that are used to darkness or giving your position away in case you have a bright idea of sneaking with a torch in hand.
Team-based tactics is the third pillar. Pretty much every turn-based tactics game lately does this though. In the words of the developers, Solasta will not be a game about one character and their followers but rather a party of four where everyone is equally important.
The fourth selling point is what may or may not have come indirectly from Tactical Adventures . Given the current aversion of PC gamers towards Epic Games Store, it will certainly garner some goodwill that Solasta is on Gaben's platform.
Kickstarter has not been popular lately either due to Epic grabbing crowdfunded games and making them exclusive to EGS despite the developers promising Steam and GOG keys previously. Considering Solasta's release date is likely years away, it's possible Valve will incorporate some antimeasure that will prevent games from being advertised on Steam and switching to EGS by then.