Upcoming Maintenance
On 10/29 from 11am EST - 3PM EST DomiNations will be down for a brief maintenance period. This maintenance is to address backend compatibility updates only. There are no bug fixes or feature updates included.
I don't think this list exists yet, but I wouldn't be surprised if they were gonna add it to the Wiki. That said, you can click the question mark on the books in the research screen and see what each chapter of research will get for you.