Batman: The Animated Series is finally getting the remaster treatment it deserves. From this weekend's New York Comic Con Warner Bros. announced that "later in the year" in 2018 it will release the influential animated show to high-def formats. As Polygon notes, the specifics are a bit fuzzy at this point. Will the 85-episode show come out all in one boxed set, or in volumes like the DVDs before? At this point that's up in the air. However, any package will likely look and sound better than streaming the show on Amazon Prime. Plus, every episode will almost assuredly have the iconic opening credits sequence attached.
This summer Warner released Batman: Mask of the Phantasm on Blu-ray, the PG-rated feature-length movie that takes place in the Animated Series universe. If you want a peek at how gussied up episodes of the old series might look on Blu-ray, that's probably your best bet.