I listened to it a lot in the last 24 hours, and I gotta say, I'm pleased. I wanted a good song, I got a good song. Certainly nothing groundbreaking, but it has absolutely everything a Dream Theater song should have. Everybody is just on fire. Mangini played remarkable, John's solos sound fresh and beautiful, Jordan did an incredible piece of work, especially with the piano section, James nailed it, and Myung had some cool moments.
Some of my favorite sections... Well, the moment the choir kicked in I was blown away, and then there's that guitar riff. I love the bit before the verse starts, the verses are fine, but not as awesome as the chorus. I enjoy that groovy verse that reminded me of Strange Deja Vu ("Back on my feet again..."), and then there's that brutal transition before the last chorus.
Overall... Did anyone really think the song won't be good? Bring on the fuckin' album!