You may know more than me. Since getting much of my web access blocked at work, I'm not able to keep up with the most current info.
In general, nothing is set until the team goes public with the roster for the event. That will be just weeks before the event. The top riders often go public once they know they are planning to do.
I was surprised that Lance announced interest in the Giro. He has some sticky issues with the Italians. There are a few prosecutors and investigators that would like to ask him some questions. The laws for sporting fraud in Italy are very anti-athlete. Lance's Italian doctor spent time in Jail. Lance refused to cooperate and answer any questions. There is also an Italian rider that sued him for defamation and some other stuff.