A new listing on eBay shows that these may be new 2016 LEGO Batman and Joker minifigures. The listing states that they are 2016 unreleased minifigures and the wings clearly have 2016 LEGO markings on them.
I also found another listing with this same Batman minifigure, also listed as official.
Please note: It is quite possible that these are fake minifigures. We will keep you posted.
It’s likely fake considering Lego has been using a new mold for the cowl