I haven't heard anything but with all the flooding that's happened in the last two weeks, you can expect there will definitely be a LOT of mud and quicksand and an excellent chance of other changes in the canyon that might make passage more difficult than usual. I would avoid it until it dries out a bit - I've heard some horror stories about it when it's really muddy and it is not something I would ever want to experience.
But if you go (or hear anything more about conditions), let us know how it is!