I do think Nokia highlighted the fact that there is support for multiple calendars. In some video, I think one with Peter, this has been said. How to handle that on a technical basis, I don't know, though.
Now for the syncing, yes there is an API to sync contacts since I have a daemon running on my Windows box which syncs my Outlook contacts to Google (and then onto my Android device). The same is valid for Outlook and Google Calendar, there is a daemon as well for that, so the APIs exist.