I can't believe people actually bother asking these questions.

It seems pretty obvious that the next preview will be posted when the EB team feels like it's time to post it. Whining and moaning about it will only waste your (and other people's) time. There are about dozens of dozens of topic asking for this, with the same answer each time. Can't you like, actually read them, and stop thinking that the team will for some unknown reason give you a preview because you asked (not that) nicely ?