I've been playing it the last week or so, if anyone has played Divinity Original Sin 2, you're going to feel at home here (not surprising, considering that Larian Studios has made both games).
Its in Early Access, so naturally there's not a huge amount of content and still some bugs to work out.
At the moment, playable races are: Human, Elf (3 subraces), Half-Elf (3 subraces), Dwarf (2 subraces), Halfling (2 subraces), Tiefling (3 subraces), Githyanki and Drow (2 subraces). While nothing has been confirmed yet, its expect that Dragonborn, Gnomes and Half-Orcs will be added down the production line.
Likewise, classes available now are: Fighter, Cleric, Wizard, Warlock, Rogue and Ranger. And likewise, its thought that Barbarian, Bard, Druid, Monk, Paladin and Sorcerer. Its thought that they weren't included in the Early Access due to unique mechanics.
At the end of the day, its a good game, and the feedback Larian will end up getting will help make it a better game.