I was wondering the same thing. Just for kicks and giggles, I'm checking each 2 week period through the online booking tool, and not one single night is showing available until August 1 for standard studio. It's gotta be a glitch, or for some reason, they've pulled all availability from online before Aug 1. Just seems really convenient that starting Aug 1, every date is available, and nothing before.
I just searched July 28 for 7 nights. Standard view is wide open....Tried to book 1 night (29th of July) at 9:30 this morning and none were available in either studio.

Not sure if accurate but DVC availability tool shown no availability. It is showing Aug forward available.
If accurate I wonder how many rooms were available and as they sell will they open up more inventory.