It will probably be a more extensive work compared to Zurich and K'Hare, more like a completely redone ground texturing method (similar to KDFW and KLAX), and will very likely be payware product, with a favorable upgrade price for existing customers, but it surely can't be a free patch.
We don't have a firm release date now, it should probably somewhere in 2012, likely after CYVR will be released.
This is great news for me. I was hoping for just that: a completely redone airport with all of the bells and whistles like KDFW and KLAX. I would also be happy to pay for it, especially if the final product looks like those airports. Hopefully we'll see it out before the fall of 2012 but whatever works. I am very excited!