From @isglitchopen on Twitter: "Now we are done this test. The next one will last for a full week and begin on or around Aug 11th. Enjoy a little break!"
There have been PLENTY of times it has been down this long. Never up for a week, so that is awesome.
I wouldn't make any speculation on what this means for testing vs launch or any of that. It's just a long test. And being down for so long (which, let's be honest, if they actually take the weekend off, means it is only down for 4 days) is probably just because they'll be introducing a fair amount of new stuff that is getting close to being ready. That takes time.