I think they will stick with MC. Citibank is the largest issuer of Mastercard's and I doubt they would put such a strong product of theirs (Chairman) on a secondary platform and effectivley reduce its usage by customers since it could be on the AMEX network with a lower acceptance rate.

I think they will introduce a World Elite version of the Chairman Card. The MC World Elite press release implied that other institutions will bring their own World Elite version online through 2007.

Though I am not sure if they will keep the current version Chairman and issue World Elite versions as well or force customers to move to the new level World Elite and phase out the current level of Chairman (World) ---or better yet, do not issue the current version any longer and give an incentive for those that have the current Chairman that wish to have the new version.

There was a rumour that Priorty Pass will be improved to include all authorised user on the Chairman account whereby they each would be issued thier own Priority Pass--this would be welcome by me. Also that they might seperate charges out on different pages for authorised users--that would be better too.