I'm trying to figure out how large the new AP is, so I'm wondering how long does it take to play through one book in the series? I know it's impossible to say for sure and the time varies from group to group but I would be happy with a rough estimate. Have you, Paizo folks, playtested the adventures yet?
If the adventures are really big (which I'm thinking they are), it would be cool if there was some sort of conclusion for each book so that it is possible to end the campaign in some sensible way without actually playing through all the adventures.