After a week or so of being exclusive to the LEGO website, copies of the ad were sneaked onto youtube.com, where we got a copy and embedded it beneath this post.
Although the 30 second LEGO ads have never been spectacular,
it does go into some more detail concerning two of the sets,
Hogwarts Castle, and another set, the Hogwarts Express train.
No other sets are shown in the ad, and half of it is pure
CGI animation, (Computer Generated Imagery).
I won't say whether or not this ad was good or bad,
but allow fans to judge for themselves after watching this video.