For 2011, Yeti made some substantial changes to it's venerable 575. The frame itself is available in 3 colors, each with new Yeti graphics... turquoise, black, and white.
I was browsing the Yeti website and came across this very trick 575. Shown above is Steve's custom one-off Yeti 575 built as a special run for Yeti employees. It features custom geometry, including a longer top tube to better fit Steve. It also has a special custom Yeti black/white paint scheme. Some other trick details include a custom painted carbon rear triangle, tapered headtube, welded-on ISCG tabs and an e.thirteen LG1 chain guide.