http://science.ksc.nasa.gov/robotics
As of the time of this post, NASA-TV is booked for broadcast, BUT.......
no satellite truck has yet been scheduled or confirmed. I estimate there are only even odds for a NASA-TV broadcast on Saturday, but about 100% chance of a successful webcast on Thurs. - Sat. My suggestion for those of you unable to attend the Nationals in person, find a good computer with decent connectivity and a comfortable chair.