Belay my last.
It's obvious I attempted to give way more credit than was due. NASA just announced (per FoxNews) that fueling will be commencing immediately, with a 30% chance of launch tonight.
Silly me.
spaceflightnow.com
1932 GMT (2:32 p.m. EST)
NASA says no technical problems are being worked in the countdown right now. Fueling continues to go well, despite the late start today.