Now folks, this is a "rumored project in-the-works" so take that with a grain of salt! A lot of these don't materialize no matter how awesome they sound, but that's our job as the public to spread the hype and the demand and make sure it happens.
In development now but slated for 2018 release: Pixar's Junk, a collaboration with Matt Stone and Trey Parker. It's set in a world ("In a world...") where all the characters are human genitalia, male, female, you name it - all lightly anthropomorphized with tiny lil' cartoony wiggly limbs, animated cartoony eyes and mouth, but apart from those add-ons the CGI technique is supposedly an absolute breakthrough in photoreal depiction. Even the little outfits they wear look just like real little outfits! Naturally there's a lot of subtext poking fun at stereotypes, prudery, cultural and religious biases.
The plot concerns an invasion of fist aliens with designs of their own on the populace. Rumored but not yet committed to direct: Brad Bird.
Anyway that's the way I heard it.