Thank god for that. I'm not waiting for a remix album to be honest.
What people might mean with CD2 would be a release of already recorded material (in the period 1998-2004 or so), like "Atlas Shrugged" and other rumoured/confirmed titles.
Most fans at the moment, I have the impression, would prefer a brand new album recorded by the current line-up.
I myself would take both, any release is better than nothing at all for years (like we had before).