"Let's fly to the everfree forest!"

I think she is referring to how Hasbro is releasing a new Nightmare Moon toy. If I recall correctly, Luna/Nightmare Moon were never going to be prominent within the show since some of the execs thought that dark characters and stories wouldn’t bold well with the audience. Given her popularity, I take it that some people are eating their hats right now. I would really like to see more episodes like Sleepless in Ponyville.

Here’s the article I think she is referring to, although I could be completely wrong.
http://www.equestriadaily.com/2013/07/talking-nightmare-moon-and-rainbow-dash.html