Erm, two zeros at least, they spend £billions on "Platforms" now, which is why the new Defender will have to be:
1. Built on the current Discovery/RR platform.
2. Built on a Tata platform. (Tata Safari anyone?)
3. Built on a 3rd party platform (really unlikely)
4. Built on the current Chassis in a far off land where passing you driving test means driving forwards 100 metres and backwards 100 meters and never ever sold to the likes of you and me.
If you want a "new" Defender as we know it after 2015 it'll have to be an Ibex, which wouldn't actually be that bad a world:
I like this BTW thanks Plumber:
Cheers,
Mike