Symphony X, Evergrey, Angra, Nightwish, Rage are not bands to Slot #6, therefore these bands unfourtunally are not the returning band.
I think the returning band will be Pagan's Mind, Devin Towsend, Jag Panze or Angel Dust
I already posted about Devin Townsend in another thread. Here's a thought, what about Redemption? They've been there and played before, maybe this time it would be in a longer set (higher slot)?
No offense to people here, but look at the band's slot and it will give you an indication of who it can and can not be. I mean c'mon guys, I am a stupid redneck from Alabama, yet I know from the slot position it is not going to be certain bands.