Board Thread:Game Discussion/@comment-29191942-20161020195601/@comment-29709521-20161023093812

I don't know about teasers, but generally updates come out every month and a half, whether for an event or just general content. So the next update will probably be out in a little over a month, with teasers about a week beforehand.

Whether that update will have either Adventure or Frontierland there's no way of knowing, but it seems likely since the Pirates stuff should end up going there.