I love these. Pratt's animation is beautiful and he managed to get 1980s Superboy John Newton to voice Superman. I'd happily trade in all the upcoming Superman-without-Superman TV shows in exchange for just one animated series done in this style.
https://www.youtube.com/watch?v=T2WVlmNqMMs
https://www.youtube.com/watch?v=lSIlr2-mw-w
https://www.youtube.com/watch?v=BChNOWus2-8
https://www.youtube.com/watch?v=6Jh11y6SwTA
That's pretty cool that they're doing hand drawn animation. Definitely inspired but the old technicolor cartoons.