There is one already, which goes to every FFXIV account holder wether actually paying the sub or not (unless you've opted out of the mailing)
I received mine for 3.1 on 10 November 2015 at 20:25. It had a video at the top and six sections underneath about specific content. Perhaps your mailing options are in your SE account (not mog station)

https://xmail.square-enix.com/fe/vie...I6ImVuX0dCIn19