Although now, they say that it's not a feature film but 3 episodes which are 80 minutes in length altogether. The original Cheburashka films, with English subtitles, can be found here.
More details and pictures (in Russian) here.
Meanwhile, here's a making-of video that was released on November 11:
I can't stand the autotuned music in this clip, personally, but I'm surprised at the degree to which the East Asian team tried to stay authentic to the original look.
