Why we have no official info on the MacBook Pro's battery life

This afternoon, Apple invited some journalists at a presentation of its new products at EBC in Paris. If we weren't invited, we had some "unofficial"correspondants attending.
And they did ask Apple about the new notebooks' battery life.
Their answer is quite interesting: the machines that were demoed are only prototypes and the final versions are still under development. They thus don't have any hard numbers on the battery life of the final products.
The disappearance of FW800 has also been discussed: Apple said it would have required them toi build a specific FW800 card (Intel does not support it), and that they had no plans for it [moose: well, down the drain goes Apple's autonomy to innovate.]
Let's hope they hurry up and finalize (but not rush out) their machines before the official release date (within a month.)