It's probably already been said in a thousand other discussions, but Flow is a really good movie, highly advised
This animatic can be found on YouTube.
Flow's having an impact on animators seems great!
What made Flow unusual is that they bypassed the storyboard almost entirely, which is unusual for a feature film. One rational is that the movie features significant and lengthy camera motion shots. Camera motion is very difficult to capture in a storyboard.
At a student level, another motivation for lessening the importance of the storyboard is that they require not insignificant drawing skills in order to do effectively. Even animation students cannot be guaranteed to draw well, and the number of student filmmakers who can draw is vanishingly small.