I was in Processing for 10 days before a charge finally hit, then another full day before the status changed to Preparing to Ship. That was this past Friday and I ordered late on May 4th, around 5-6pm CST.
Going solely by the updates in this thread, Apple was just getting to the end of May 4th orders, possibly a few May 5th orders, depending on location and configuration, coming into the weekend. Some of the standard configs that were ordered on the 5th also saw movement, but beyond those order dates, there may not be any changes until Monday comes around, especially since Apple had the issue with their order update/shipping system over the weekend. The weekends will usually generate shipping labels with the actual shipping taking place on Monday.
My update: Still sitting in Preparing to Ship, which isn't surprising, but at least my progress didn't revert back to Processing after the system came back up whenever that was. Hoping it will ship Monday and I will have it by Friday.