Didn't someone point out that if they are still blacked-out after the feasibility is released then they are likely in negotiations? At this point they might expect to be in negotiatons, or in that period between an announced deal and when shareholders vote, by the end of January 2013. It seems reasonable to anticipate a need to extend the deadline. It does seem logical to do so while they are still the ones in charge.
If we do get a deal then it might take months to negotiate and vote and close so I would assume that they are covering themselves (or EE) in that eventuality.
I just don't think the stock price will be allowed to plunge without releasing the feasibility. If it is being reviewed by Teck it is as a courtesy at this stage, and I think that the stock price would be protected from dropping while material information is being held back.