We may never know, but what we do know is that the content of the newsletter is info on the Explorer's Edition. It'll include 15 (hopefully not useless) weapons and a reversible cover. As an aside, reversible covers seems to be a new trend, what with FE Echoes getting one as well, and I kind of think it's a nifty idea.
I know this isn't fresh news, but no one seems to be talking about it so I figured the late-night newsletter would be a good way to start a conversation about it.
I actually watched this over two years ago but didn't realize no one ever shared this. Probably one of the bigger channels to do an LP of a Dragon Quest game. It was also pretty entertaining and decently short. Spent the whole night watching it when I first saw it and put it on recently when I remembered its existence when I was trying to fall asleep.