It doesn't give away clips, there's twenty, as you said. I think you meant, does it give away any plot 😛
And not really... they're quite short. Some Dooku battle footage, a few scenes trying to escape the Iron Hand, couple Ani/Padme scenes, dialogues between Obi/Ani, three clips that form one larger clip. Good stuff, I don't feel guilty watching these. Besides, I doubt they would put too much into an item released a full month and a half ahead of time.
Almost exactly an hour later,lol, here it is:http://s38.yousendit.com/d.aspx?id=17VS4UM1UKIMZ3CFX1LHYS08TP