Nokia seems to have rolled out a new update for Lumia 920 starting from the United states. The new software version is 1232.5957.1308.0001, which was also spotted on navifirm few weeks ago.
This new version brings improvements to the promixity sensor of the phone, auto setting up of brightness, and some general performance and stability improvements, but there isn’t any mention of the storage option which was reported earlier in the navifirm leak.
You can check for this new update if you’re a Lumia 920 owner by going to Settings – Phone software. The phone will check and show if there’s any update’s available in your region.