I believe the answer to your question was in one of the company's employee conference calls regarding a question about exercising the options. The answer came from one of the top dogs in the company, "JD" or "BF".

Even if the company has decided to exercise the options, they (and presumably, Boeing) cannot announce the conversion of the options to firm orders, until all firm orders are delivered. At least, that is how I understood the explanation during the conference call.