Bethesda has posted a message in the Bethblog forums, stating that not only is the “upcoming DLC” (which we know already to be Honest Hearts thanks to a leaked trailer and some screenshots) finished, but a patch is going to be released before the DLC release.
The blog states: So what’s in that patch? First and foremost, optimizations and stability improvements. While there are bug fixes, our core focus was on improving stability and performance. We worked directly with first party platform owners to identify issues, and we have fixed a great deal of the crashes and lockups that people were experiencing. In addition, we scoured the forums and this patch includes weapon balance tweaks and other requested fixes.
Stay tuned for more info.