This is from the guy who works at a TV listing company that dropped the information on Discord's episode, along with season two's start date. We will keep it rumor tagged until it officially pops up in TV Guides, but have something to munch on for now! Keep an eye on this post for future developments.
All episode information can be found after the break! I don't think Synopsis are really spoilers, but you have been warned I suppose.
Season Two Episode 4: Luna Eclipsed
Air Date: October 22, 2011
Synopsis: It's Nightmare Night and the macabre celebrations are in full swing when Luna herself shows up in Ponyville, determined to change her frightening public image.
So our first encounter with Luna is a Halloween episode!
This also sort of confirms the leaked images from yesterday.