According to Zarhym, it looks like there will be a huge new patch on the PTR in the near future. What will it contain? No one knows just yet.
[bluepost]We plan to apply a new build to the 4.0.1 public test realms soon. In order to accomplish our development goals while pushing this next patch, testers will be required to re-patch and re-download all of the PTR client data. This should happen automatically and you can verify this by checking the Launcher when it begins downloading new data. The progress bar should be empty and in the red (Setup) section. (source) [/bluepost]
