Too soon to tell. I'm sure since they played it extremely well during the last tour, that it's in one of their setlists.
they will play it eventually. right now theyre playing it during sound check and there seems to be problems when they play it so they're trying to get their wet feet with the song before playing it i'm assuming. you might be able to catch it live.
Man i'd of been so annoyed if I missed The Catalyst live, although if Brad's sick, there's really nothing they could have done...