Some cool new changes are:
- Researching technologies and civics again, called "masteries," for additional benefits
- At the end of the tech/civic trees, there's a "Future Tech" that players can research over and over to accelerate the pace of the entire game, reaching the next age quicker.
- Not in this video but from this livestream, when you gain a population you can now choose to "expand upward" instead of taking over an adjacent tile. A specialist can be added to your tiles to increase the yields.