How many settings on SelfTimer?
Not sure yet as due in next firmware update at photokina.
Hoods for the two lenses?
Yes, all lenses come with hoods.
Cable release option?
Just the wifi app can be used as a remote currently. iPhone compatible.
B settings?
Yes, there is a bulb setting.
How can we set shutter speeds beyond say 2, 5, or even 25 minutes?
In shutter priority you can set shutter speeds up to over an hour. The is exposure compensation too which can be used in tandem to adjust your given exposure.
From this I deduce there is no viable way to set long exposures in camera in M. It is said this is done via wifi to your mobile device ( iPad / iPhone ).
Intervalometer possibility via any future cables ?
There will be a built in intervalometer function.
Flash is c/o a hook-up with Nikon, so if you have SB flash units you will have full TTL.
Different size RAW file?
They also shoot DNG files and just full size in raw.
Multipoint AF and how to switch between them?
It will be a two stage update - first stage as nine point focus, and then touch screen anywhere focus. For first stage you will be able to scroll through the points to select them.
Depth of focus preview at all?
Yes, there is a dof preview button on the front of the camera.