Buster Olney just tweeted (and here) that:
The Astros are working very, very hard to work out something acceptable in order to move Roy Oswalt. But there are a lot of questions about how many teams would be interested, given all the dynamics -- the cost in prospects, '12 option.
So. Nothing new there, but at least we get some reassurance that they're trying hard. Nay, "Very, very" hard.