I've been trying to find exactly that for awhile now. All I could find out was that Alternative Press had some limited edition release last year that had both of them. Missed is part of Shed on itunes, and the old version of Dreamcatchers is on there under its compilation, don't think the rerecorded version is there though.
Seeing how all of their releases differ from each other, I'm going to assume it'll soud different from both albums. I don't see them making an album or EP that already sounds like one that came before it.