It's going to be a rough day at work.
This appears to be the best vanilla Civ ever and some of the changes from V are fantastic. Diplo victory (aka the richest city states in the universe) is gone, religious victory is added (you can have a religious war without being at war militarily, but you can have casus belli to start a holy war), and speaking of casus belli, there are much more interesting ways to interact with the AI wrt. war. It's just not surprise war all the time, now you can have formal wars, colonial wars, holy wars, liberation wars (explicit, you had them implicit in V where you could liberate cities but now you can actually declare to the world you are going to do it)
Also the cities are unstacked so you have much more incentive to play the map and not just put down a 3-4 cities, farm and mine them up and then turtle to victory by building all wonders in the same cities. Now wonders take up a tile on the map and they have very specific requirements (for instance Big Ben needs to be built adjacent to a river and adjacent to a commercial district containing a bank) so one city can't build them all.
Great people have changed too and now they have unique bonuses and abilities which are varied and interesting.
All in all, I have been riding the hype train and the hype is real and I want to go home and play but I have to work