When the test sailing was canceled I had seen quotes from the Disney folks that said something to the effect of "we're going to reschedule for next month", but that was said with only 2 1/2 days left in June, so uh, yeah that's kind of a no brainer.
But I saw news outlets take "we're going to reschedule next month" and stretch that to "we're not going to reschedule until next month" or "we're going to reschedule in a month"... I didn't see anyplace that Disney actually said anything beyond "tests were weird, we'll do it next month"...
The good news is that, once they actually do have the test cruise, things can fall into place very quickly. I've seen people throw around "a minimum of 14 days wait to see if cases pop up and then for them to compile their report and turn it in to the CDC and then the CDC has time to make their decisions and blah blah, then after the approval Disney has to prepare for revenue cruises, so it's 30-45 days minimum." But the 14 days is just the maximum period that the Cruise Lines are required to report any cases that do pop up. (if a case shows up on day 15, no having to amend a report that was already turned in). They can turn in their assessment report the second they're back at the dock, and the CDC can look at it and say, "yeah, looks good."
The Freedom of the Seas did its test sailing on 6/20, returning 6/22.
The CDC approved them for revenue sailings on 6/29 (one week later)
They sail tomorrow, 7/2 (Three days after approval)
That's just 10 days between 'see ya real soon' and a official Sailing.
Nobody knew what to expect from a timeline, but I think that's probably way better than anyone was hoping. Looks like Disney had a month built in between Testing and Sailing to accommodate for possible Plan revisions and/or additional required test cruises, and maybe that cushion is exactly what will help things stay on track.
The Dream was (is) crewed up already in anticipation of the test sailing. They're going to be anxious to put that crew to work. I'm still fairly optimistic that the August Dream Sailings will go as scheduled, or that no more than a week's worth gets canceled.
But a little info from Disney would help.