Going to post a couple links, and will post more as we find them.
TrackTalk.net discussion thread: Rock first announced this shortly after 6 p.m. CST.
Denver Post article: Lukas Verzbicas, U.S. triathlon Olympic hopeful, hurt in bike crash
@Bob_Babbitt looks like the place to go for updates: Broken collar bone, blood in lungs, and back surgery
Il.MileSplit.com has a post about the crash: Distance Star Verzbicas Injured In Bike Crash
Il.MileSplit.com also linked to this article by Triathlete Magazine: Lukas Verzbicas Injured In Bike Accident
Steve Underwood has a story on ESPN.Go.COM: Verzbicas seriously injured in bike accident