You can watch episode 1 and 2 here:
Thanks *AquaticNeon for creating this
DVD release date is December 4!
The Crystal Faire teasers are in the episode, "The Crystal Empire" (part 1 and 2) Most likely this will be the first episode.
In Adventures in the Crystal Empire, a magical empire has suddenly appeared in the arctic north of Equestria, and PRINCESS CELESTIA needs TWILIGHT SPARKLE and her friends to find a way to protect it. While her friends try to keep the Crystal Ponies occupied at the Crystal Faire, TWILIGHT SPARKLE searches for the hidden Crystal Heart that is the key to keeping their empire safe from harm!
PRE-ORDER IT! - [link]
The DVD will include some Season 2 episodes as well:
• The Crystal Empire, Part 1
• The Crystal Empire, Part 2
• Sonic Rainboom
• Luna Eclipsed
• It's About Time for season 3...
Equestria Daily articles - [link] [link]