You are late for the testing, the update has already been released.
The idea was that you installed this several weeks ago when the PTR was first available just that in case your computer was not behaving correctly you would come here and comment about it, or if by any reason crashes happen they would have received the corresponding reports.
Its pointless to install the PTR now as the main game works exactly the same now.
Also there where not many players, it was empty, i was capable of play 3 games and then never opened it again.