Enjoy the J->F op up's while you can. It will be harder to come by once CX introduces the 77W on their Transpacific runs when the aircraft is delivered in late fall.
There will only be 6 First Class seats on the 77W.
...
CX should receive up to 6 773ERs by the end of 07/early 08.
Premium configuration is F6/J57/Y238 - total of 301 seats
Currently CX plans to deploy all the 773ERs on North American route first, in the order of:
1. JFK; 2x daily non-stop
2. YYZ; begin with 3 weekly non-stop eventually to daily
3. LAX
4. SFO
5. YVR