A Blue post today announced that PTR testers can get free TCG loot to test and have fun with:
As a bit of extra fun for this PTR session, we will be allowing players the chance to redeem some of the new UpperDeck loot cards. We encourage any players on the PTR to visit Landro Longshot [...]

Hortus posted today that the PTR phase of 2.4.2 was complete and the test realms are now offline.
We will be taking the 2.4.2 PTR down shortly and ending the 2.4.2 PTR phase.
Thank you to everyone who participated in this test phase. We hope to see you all again in future tests.
I’m not a gambling [...]

Hortus announced recently that Season 4 was now available on the latest build of the PTR and MMO-Champion and WoR quickly compiled a list of class gear, honor gear, prices and screenshots. Boubouille makes note of a few things to keep in mind:
Season 4 Vendors are now on PTRs. They are PTR stats and could [...]

Like usual, with any patch there will be a nice hefty list of undocumented changes. Well, Boubouille over at MMO-Champion is already compiling a list of undocumented changes for patch 2.4.2. (Granted most of these will probably make a finale patch note considering the patch isn’t even on the PTR)
One change that is sure to [...]

Looks like the PTR has been wiped and seems to be readying for a new character transfer. Patch 2.4.2 notes have been released. Here is a painless copy/paste for your reading pleasure.
To learn more about the Public Test Realm, visit our Test Realm Page.
World of Warcraft PTR Patch 2.4.2 
 

The latest patch notes can always be [...]