The first two seasons of Batman: The Animated Series will air in High Definition on the upcoming DC Universe streaming service. DC confirmed the details in a tweet, along with a video promoting it:
In October 2017, Warner Bros. Animation announced that Batman: The Animated Series will be remastered for a new Blu-Ray re-release - at that time anticipated to be release sometime in 2018.
DC Universe is anticipated to debut in August 2018.