I posted a screenshot of this email I received the other day on the ScoobyAddicts forum, but since it's relevant, I thought I'd post about it here as well.
The email highlights that Boomerang will be adding new shows, along with hard-to-find episodes. The features and organization of the app will be improved, including better content browsing, shuffle mode, customizable playlists, ratings, and recommendations. The streaming service will also be available through additional devices. Additionally, Boomerang is now available to watch in Spanish.
I haven't previously posted this as I didn't feel it warranted its own post, though the missing episodes of Scooby-Doo, Where Are You? (episodes 23-25) and A Pup Named Scooby-Doo (episodes 22, 23, and 26-30) have now been added to the streaming service also.