I read in some rumors that Cobra Commander will be the friend of Duke and they will have a a falling out? Which doesn't make sense at all (If they are going for the marvel run backstory)
Anyhoo I think maybe the rumor-monger was confusing GI Joe with Stop-Loss in which both Tatum Channing and Joseph Gordon-Levitt plays (and from the trailer they look like friends and some drama).

Just a random thought I had after watching the trailer for Stop-Loss.

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