[Update (15:00 UT Saturday): launch was delayed again. It is now set for Wednesday, November 3, at 15:52 Eastern time.]
Just a quick update: NASA has delayed the launch of the Space Shuttle Discovery by a day due to gas leaks in one of the Orbiter Maneuvering System pods (those are the engines housed under the big lumps at the rear of the Orbiter).
Currently, launch is set for Tuesday, November 2 at 16:17 Eastern time. This is Discovery's final scheduled flight.
There may be further delays, of course, so stay tuned.