I rushed back to my house as fast as I could to post this on OIM, just to slap a "Posted before Equestria Daily" label on this...
...only to discover that they beat me to it.
But their post only had a picture. Mine would have a video of the commercial, making it better.
...except now they added a video to theirs by the time I found a video.
Posted after Equestria Daily.
Mine is higher quality video than theirs (for now, inb4 they update again), so that's something at least.
Edit: Yep. They updated again before I finished writing this post. Damn. I just can't win. Oh well, I tried.
Worth noting is that this is NEW FOOTAGE, and Twilight's Castle appears in the background, so this is likely some Season 5 stuff.