The first images of wave 17 blind bags have been found, and Hasbro has been generous this time: HQ images of all ponies and blind bag cards are included! This way we were able to fill our MLP Blind Bag Database and figure out the codes for this wave! As expected, this wave is a re-release of wave 7, but with a missing characters like the wonderbolts (who get a release anyway) and Barber Groomsby. These have been replaced with Nightmare Night-themed chase figures, as we've seen before on eBay and Taobao. The regular characters are transparent ponies with embedded glitter (like wave 13), and the chase figures have regular material.
(Sadly, we didn't hear anything about the release of wave 16 yet)
Below we have a list of all the codes and ponies that we now know of: