Personally I hope vip's never get beta access to expansion. Why? Simple. You had the chance to buy it like everyone else for guaranteed access before june 3rd or 5th depending on which advertisement you read.
If they allow vip access the last week, what does it matter waiting 1 more week till full release anyways. If you bought it you will get full advantage then, if you didn't you will get the changes that effect everyone then.