Interesting, the took down the real "Behind the Sounds" video and replaced it w/ a teaser trailer for the album. I guess they accidentally put the wrong one up at first on Facebook.
If you didn't see it, it was like an LPTV video (maybe 2mins in length?) discussing all the various experimental sounds they tried to find for use in their upcoming songs. Towards the end, the played approx. 5-10 secs of what sounds like the beginning of maaaay be The Catalyst... lots of clapping was heard with scratching on top of it mimicking each clap - sounded upbeat, Bleed It Out-esque if I had to compare it. Hard to explain the exact sound but it was on par with all the reviews we've been reading about from the snippet I heard Hopefully they'll re-release that video on Facebook again soon.