Around 1:30am EST, Community Manager Lore posted the following statement to inform players what the game developers expect volunteers to playtest in PTR 7.3.5. Basically, they want your feedback on the new revamped level 1-100 scaling experience. However, there will be new features added for testing in upcoming 7.3.5 builds: such as Ulduar Timewalking, the Silithus Battleground, and it seems there is more quests to tell the story of the aftermath of Antorus.
By observation, something else I found that is not listed is that you can now queue in the LFG Raid Finder to Hope’s End (Antorus). That’s the only one available at the moment.
There is more Artifact Power reward in PvP Rated Arena and Rated Battlegrounds. To keep in perspective: My main is level 74 Artifact Level and Artifact Knowledge 55. In live, the Rated Battlegrounds reward is 7.7 Billion Artifact Power. In PTR 7.3.5, it is 10 Billion Artifact Power.
Lore: Welcome to the Patch 7.3.5 Public Test Realm! This patch includes several new updates and content, and also lays some of the groundwork for the upcoming Battle for Azeroth expansion.
Our biggest focus for testing during this PTR period will be on the new level 1-100 zone and dungeon scaling we’re introducing with 7.3.5. This is an extensive change to how loot, quests, and creatures work in the open world, so we’re going to need as much feedback as we can get about how things are working out. We’ll have some more details in the coming days about how you can best help us make sure this new feature rolls out as smoothly as possible.
Other features you’ll see on the PTR over the next few weeks include Ulduar Timewalking, a preview of the new Silithus Battleground, and a few other bits of content that get into the aftermath of the events in Antorus and set the stage for the upcoming conflict in Battle for Azeroth. Note that since development of the new expansion is now in full swing, datamining sites are likely to see some bits and pieces of features that are part of Battle for Azeroth (such as Allied Races).
As we’ve done for similar patches in Legion, we’ll be providing updates throughout the PTR process that give insight into what’s being made available for testing and what sort of feedback would be most helpful. Thanks for checking it out, and happy testing! — source