Not sure if you guys noticed it, but since yesterday or today if you go to you Battle.net Destop App and into Diablo 3 page and select the PTR server instead of your usual region, the app no longer allows you to start the PTR client, but only gives you an option to unnistall it. Might be the Patch 2.0 PTR really coming soon? Hopefully!
I don´t have it there also, but yesterday I was there, strange....