Are you saying it is a screenshot?
God knows how many low-poly shadows I've seen in games. However I'd like to think Skyrim won't exhibit them.
It's a console screen, it has to have low quality shadows or it's going to struggle. If your a PC gamer, you'll enjoy high quality shadows if you have the pc for it.
I know that he already has changed the original post to show that it is indeed a screen but I also wanted to point out that it has been said many times in the past that it is a screen also. Just one of the many things that show how Skyrim is amazing. As for the low poly textures and shadows, that will be fixed on the PC version.