Spaceflight 101 has the latest numbers at their Phobos/Grunt Reentry Page. The predictions are all for Sunday January 15th now.
@PhG_Reentry tweets: "trajectory" flattening (lower drag than expected) potentially delaying re-entry http://twitpic.com/86yv4u
Phobos/Grunt featured on Comedy Central's Colbert Report Wednesday. Watch the whole episode here.