I have just seen this on the Collette Pattern Blog!
http://www.coletterie.com/colette-patterns-news/introducing-albion-and-cooper-from-walden-by-colette-patterns
https://www.colettepatterns.com/shop/albion
It looks like a grown up version of the School Days coat and it's for guys! I am seriously thinking about asking my husband if he would like one. :)
The sizing also looks like the XS might be about a kids 14 or 16 for any of you looking for an older boys jacket.