Looks decent to me, though maybe a little too close to the New 52 design of the characters. But I really didn't like the design of Superman in the original adaptation, Superman: Doomsday, from several years back. Those cheekbones were ugly. And I'm really glad they didn't go super-cartoony like the did with Superman vs. The Elite or even Superman Unbound. This style looks realistic enough to fit with the heavy theme of Superman's death.
Source: https://www.cbr.com/first-look-death-superman-animated-movie/