On the game webpage, under “harness the power of the six” there’s previews of some of the characters you can make. Overall, they look great, but the give the impression that each race is locked into the class shown. I hope that’s not the case, and that you could make a dwarf wizard, pitfighter, etc, and not have all dwarves be knights.
If this isn’t the case, hopefully an update to the site/FAQ will make it clear that you will have the flexibility to make a wide array of character types.