Is there any possibility that they are looking at a Wrigley show before Toyota Park, and might just announce it later? Just like last year they played Fenway right before the tour but announced the show several weeks after announcing the tour. I checked and the Cubs are indeed on the road for 10 days before the Toyota Park show, which would leave plenty of time for Phish to set up, play, and break down. (They were in Fenway for 5 days...3 to set up, show night, and the next day to break down.)