1. no "Official" ICS rom will be released by LG or VMusa.
2. CM9 almost certainly WILL be ported to the OV, but it wont be in a "stable" state for a long while, and I'm very certain it wont be fully functional for an even longer while.
3. ICS might "run" on the OVs hardware, but not the way its intended. I'm willing to bet it wont be as fast and slick as 2.3.7 is on the OV.
my reasons for this?
the ISC experience is provided by hardware acceleration, and the Adreno 200 in the OV is a few generations old now. definately not powerful enough for tasks like this. Although maybe it is? who knows.
the really COOL ics features require hardware the OV doesnt even have.