Will you be getting a Premium AP or a Deluxe AP? I am not sure about the Deluxe and what comes with that, but the most recent description I read of a Premium indicated that the newsletter (which is a magazine called Backstage Pass) and Disney's Family Fun magazine are included in the price of the AP. It used to be that they did not guarantee those things as part of the AP membership package, but the description I read not so long ago seemed to be more specific in saying that PAP holders would be getting these two magazines.
My Premium AP expired last October, but in the year that I had it, I got the Family Fun magazine multiple times and I think I received all but one of the Backstage Pass issues that I should have received in the full year that I had the PAP. However, there have been many people on this board who reported never getting a Backstage Pass at all, or only receiving one and that was it.