As awesome as Batman Beyond: Neo-Year looks, I hate how they seem to be completely retconing all of the Rebirth Batman Beyond comics (one of the few good things that Rebirth created). They show all of the characters looking younger and even show his mom (who was dead prior to the Rebirth comics even starting). They’re getting rid of a ton of really amazing character development. I despise this retcon so much, it seems like they making it so that Terry’s back in high school.
They better not be retconing it solely so they can have Terry and Dana get back together, while completely erasing Terry and Melanie’s relationship at the same time.
Batman Beyond Rebirth retconned most of the previous comics’ continuity and some of the best parts of the original series. It’s just fair that now it’s being retconned.
Anyway, most of what you talk about was already practically erased by the run itself. Terry and Melanie’s relationship disappeared when Melanie was shoved aside once Elainna showed up to be the Token Young Woman. Terry had no character development, just sudden characterization swerves. Matt ended the series the same place he started, the gee-whiz kid commentary by Bruce’s side as if he’d never been Robin. Rebirth even wasted aging up the characters, as it practically had everyone in stasis. The main change was that now that Terry wasn’t in high school he didn’t have a life outside of Batman.