Edit: The patch mentioned here has been deployed (Patch 1.30). See you all in game!
=======================
Hey folks,
We wanted to get ahead of this early and let you all know what to expect with our next big patch. We don’t currently have a release date/time with this, but will update this thread once we do.
The next major patch will have some pretty fundamental changes to the game client. The number of back-end changes we’re putting in is substantial enough that we can’t just patch over t…
They posted and stickied this a few days ago. Basically, they are making substantial changes to the client that should help increase performance for more players.