[Kevin Sevcik]

In answer to the original question:

Practice round schedules will be waiting for you thursday morning at your pit or something. Qualifying round schedules won't be available until Friday morning.

This is because the rounds aren't even generated until Thursday night when most teams have arrived, checked in, and been inspected. This reduces the chance of having complete no-show teams in rounds, since by then officials will know if all the teams will be competing.