Some of the gear on the PTR will be revamped for the AQ40 test, some items will be added that were missing before and some items that were available will no longer be available.
There is also no plan to have a consumable vendor on the PTR. I understand that many people will complain that such items are "necessary" for clearing content but remember that the PTR is not for you to clear content but to test it. Our hope is that most guilds, if not all guilds, would not clear most bosses on the PTR. Often times we get better feedback and testing from wipes.