Sprint will most likely never say that something won't be available to a certain phone until that model is completely outdated, maybe in 2 years Sprint will officially say that ICS is unavailable to Optimus users. With Sprints track record of epic fails and the updated version of Gingerbread being released soon, most likely going to be an epic fail as well, I doubt you would want Sprint to fail miserably with ICS. Best bet, get a new phone that already has ICS, switch carriers, or manually install (will void any warranties).
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