Focus Features has a new documentary called Babies coming out next year. The film will follow four babies (one from Namibia, one from Japan, one from Mongolia, and one from the US) from birth through their first birthdays. It doesn't seem to be overly analytical —more of an extended awww opportunity than a hard-hitting investigation.
The trailer is beautiful.
I especially enjoy the Mongolian baby's squishy cheeks.
Also, the American baby's name is Hattie, which is another name I love but FB doesn't (even though he has Harriets in his family tree and I most certainly do not).