Those are fake. There are only a few songs that Creed has ever mentioned but were never released. As far as we know Creed has no intention on releasing any b-sides.
One song of theirs did leak a little bit ago, about a minute was released through youtube. The song was called "Do it all over". You might be able to find it somewhere. But Wind-up took it down. Here is a Brazilians bands cover of the song, you can get a taste of what the song sounds like.
http://www.youtube.com/watch?v=haLOBtGGums
If the EP ever comes to fruition, I would like it to have some acoustic stuff, b-sides and that new song tremonti was working on.