Why is everyone freaking out about this and the Angry Birds movie? Literally nothing has been released that can make people like/dislike it. You all are freaking out over nothing.
That preview image I posted was released on October 1st this year, and the article that the image links to shows the voice cast.
See? Two things that've been released for the Angry Birds movie, which we've known about for a few years now.
The Tetris movie, on the other hand, has just been announced, and the only thing we know is the guy who's producing it, who has made a direct-to-DVD movie that was absolutely godawful. BUT the main reason we know about that film is because a popular YouTuber (JonTron) made a video about it. So anyone that knew about his past work wouldn't like it, but others would be indifferent.