>>96072925
New careers were in the player Guide released a couple of months ago, and they seem decent overall.
High Magic is very much something a Player would have to min-max for.
As for new lore, I guess Tor Koruali is given a lot of depth that wasn't there previously, but I'm not sure how much of it is brand new or just the C7 writers going off information that was in the William King Teclis and Tyrion books.
I think the mention of a Khornate Elf is new, but it's just a footnote for an NPC the PCs could, in theory, interact with.