Although Sony has yet to release the changelog for this update, but there are reports that claim it will fix the cumbersome ” Sleep of Death ” bug on the device. Anyway for those of you who’ve yet to receive the OTA update notification, you can always go to Settings > About phone > System software updates to manually check for the update as well.
So have anyone of you received the Jelly Bean update on your Xperia V?
Source : Xperia Blog