I've played about 30mins of the tutorial this morning and so far i'm really liking it. Small changes like being able to link settler to a military unit for protection is a big plus. Only being able to build something like a library on a campus improvement makes for better city planning. The new civics tree also seems a bit more interesting.
I'm not sure how i feel about the removal of some of the automated features though. I can understand why they did it, especially with builders. But i can imagine it becoming tedious to manage a bunch of exploration units every turn during mid to late game.