The first wave 15 blind bags have been spotted in presumably the southern of Europe (France/Spain/Portugal). Someone by the name of mlpbatman posted these images online, showing the bag and card design. As mentioned before, wave 15 is a re-release of wave 5, with the princesses replaced by the other mane 6 members.
With this card we can now safely conclude the blind bag codes, which matches our initial code list. At this moment it's unsure whether this wave has the viewing window or not. The release date is set for January 2016, but this may vary per country and store.
Thanks to mlpbatman and Eclipsed Flame for the info!