I read this until recently. The best we have so far is that it is going to cover stories ''pre-Fellowship of the Ring'', whatever that may mean. I guess it will remain in the 3rd age, not sure though. I hope we get to see more interpretations of the Eastern peoples, maybe a war between Gondor and the Balchoth?
As long as they make the films lore-friendly (as much as can anyway) and keep the artistic approach of LOTR and the books, and not go full CGI-Michael Bay on us. That is all I ask for.