2019 version ep 1 is out.
The atmosphere for that first ep is a lot lighter than the original anime, eventhough it retells the same things.
It seems we will just have some minor changes, and a graphical upgrade.
Ending says "season 1" I guess they'll go farther than the original anime.

Thoru's design feels worse than the original.
Everuone else is better, except Uo.
Some scenes had nice detailed picture, others were a tad lower in quality. I guess they splurged some money on the first episode, felt too qualitative at times for a tv anime.