Warner Bros. Animation is already rolling out short ads on Tik Tok and Twitter in support of the Lord of the Rings: The War of the Rohirrim. The first US domestic trailer debuted less than two days ago, closely followed by a trailer specifically for Japan featuring a dub cast of Japanese seiyuu (do watch the Japan trailer it has extra stuff!).
Check out this Tik Tok short below.
The ads all lead to a newly launched single-page minisite for The War of the Rohirrim — https://www.lotrthewaroftherohirrim.com/ which currently features the US trailer, and a synopsis with the current English-language voice cast.