you should expect invitation only to get the program going (regardless of spending)
followed by anyone who can breath and spends $250,000/year Minimum.
In all cases yearly membership of $2500.00 and $1500.00 (per Year)
respectively.
The only wild card (unknown) is if AMEX managed to get Air Canada on
board with upgrades. (to try to "Canada"the program.) probably will include
to US airlines.
The rest pretty similar to Platinum Canadian Card.