Yep, At the Earliest. It could be later.
Streaming Video
All of these are Windows Media
300kbps: http://playlist.yahoo.com/makeplaylist.dll?id=1369081
500kbps: http://playlist.yahoo.com/makeplaylist.dll?id=1368570
1200kbps: http://playlist.yahoo.com/makeplaylist.dll?id=1368163
Other streaming options are available here: http://www.nasa.gov/multimedia/nasatv/index.html