LG has just released some information showing which devices will be getting updates -- and when those updates can be expected. Of course, a global press release like this doesn't do a whole lot for those of us not in Korea. But we're not gonna look this gift horse in the mouth.
First off, the Optimus LTE II will be receiving Jelly Bean starting in November, bringing UI improvements and LG apps. (Basically bringing it more toward the full out-of-box experience of the Optimus G.) The Optimus Vu and Optimus Vu II in Korea will get Jelly Bean starting in Q1 2013, with similar improvements including improved touch response. From what we can decipher in the translation of the release (sorry, working to confirm this -- someone help out in the comments if you'd like), it seems as though the Optimus G models should start receiving an update to Jelly Bean in December as well.
Based on this particular release, we're not sure about the Ice Cream Sandwich and Jelly Bean update plans for any other LG devices. That's par for the course, as U.S. carriers handle the release schedules themselves, for the most part.
Source: LG
