A long time ago in season beginning far far away, there was a commercial that dropped everything from The Great and Powerful Trixieville to teasers about Twilight Sparkle's destiny. It has since been updated and modified slightly, but with a brand new title at the end hinting at the season finale.
Sadly I'm not Xyro, so I used a camera. You get the idea though! There aren't any new scenes, just a title.
Head on down past the break for piles of spoilers and speculation.
And thanks to Micheal for pointing it out!
Twilight's Destiny at the Princess Coronation you say?