My personal suspicion is we will find out the new scheme when AA, BA and IB announce it. What a novel concept. But until then, let the rampant speculation, conjecture, arguing, what if scenarios, and he said/she said continue as it is quite entertaining.
No doubt some guesses will be right. Who knows maybe even someone will have some inside information and we will find out the details minutes or days before others. Boy will we feel special then!
Until then I will wait on making next year's travel plans (May-Oct 2011) after an announcement is made to see if the new scheme makes any difference.