I hope it adds Firewire.
I see this as becoming the new meme for use on MR, akin to "G5 Powerbooks tomorrow". Well done.
Anyway, does this update reiterate the fact that these new laptops are flawed from the beginning. I'm really wondering what I'm going to upgrade too in the future. If they update the 17" and keep its 3 USB ports (and Firewire) I'm in good luck otherwise I will try to buy a refurb.
But I hope they add the firewire back like they did with the first 15" MBP when that was left out as an option a few years ago.