This is Hirune Hime, a feature film made by SignalMD and produced by Warner Bros. Hirune Hime literally means "Princess Nap". I don't what is the story, but please enjoy the teaser and a bunch of images published by SignalMD Twitter account.
The film should be finished next year
About a seminar that occurred in Kyoto a few weeks ago. SignalMD mentions their workflow with TVPaint :
