Well, you can use the bluetooth keyboard or the keyboard dock. I'm not saying it's the reason to get it, and it's not a mobile typing solution, but it may work depending on your needs.
If I'm not mistaken, they haven't said anything about connecting a bluethooth keyboard so I doubt that would be possible. Anyway, Apple doesn't intend the iPad to be a typing machine of any kind and the keyboard dock is just for occasional, very rare need for typing.