I like it a lot. Theres another song, Visions, aswell. Two completely different songs both of which are good bodes well for the album. I am looking forward to it a lot.
As for Iron Maiden, they are good and have some good ideas but some of their music is just an anticlimax. On the last two albums there were a few songs that I thought were building up to something and they just didn't do anything. It was quite disappointing.