This is not an official Google product. So why did it say Google in the title? This should be clarified.
The distinction is that this project is Google written/used not google supported.
Edit: Here's the official Google announcement: http://google-opensource.blogspot.com/2016/01/seesaw-scalabl...
EDIT: If you're going to down-vote this comment, at least provide detaro with the correct answer to his/her question!