'Reaper of Souls' Beta Hints in Battle.net Update
A step towards the expansion beta, and the Loot 2.0 patch

Shortly before the expansion itself, there will be massive game changes in the Loot 2.0 Patch. The scheduling for that patch was narrowed a little, in a discussion Lylirra had about the timing of the patch, and the PTR for it. As mentioned, these major patches that Blizzard releases for their games before an expansion are generally released 2 weeks to 2 months before the expansion itself.
Post by Blizzard (Blue Tracker, Official Forum)
A patch is scheduled for some time in between Blizzcon and Loot 2.0.
Clarification: We've no additional patches planned before the pre-expansion patch (which will include Loot 2.0 and Paragon 2.0, plus a variety of other system changes and tuning). There isn't a date set for that yet, mostly because it's still under development. Reaper of Souls isn't scheduled to release until 2014, though, and our pre-expansion patches typically hit between 2 weeks to 2 months before -- so that should help give you a better time frame.
What about the PTR?
We're definitely looking forward to providing a PTR, but don't have a set date for that either. Once we do, you can be sure that we'll announce it (you know, as we do).
Will the skill tuning in recent datamining be coming into the pre-expansion patch?
such as Battle Rage - Into the Fray, Shadow Power - Gloom, and etc.
such as Battle Rage - Into the Fray, Shadow Power - Gloom, and etc.
That's currently the plan, yup. Just keep in mind that datamined information isn't considered final and may actually change quite a bit before making its way into a public build. :)
There are many other changes happening on the battle.net website, both for the Diablo III expansion, and the many other games that will be shown at BlizzCon. There is a new Battle.net Shop now in beta, making it easier to buy Blizzard games and services. Other changes include tweaks to the forums, including updates to the history of user's posts.
We'll know much more about all of this in less than a week, when BlizzCon 2013 kicks off!