@Andreas Nurbo -
I think hes just hoping that 4.0 will bring innovation and new thinking but I’m just writing what I think. And why not start start discussing what should be in 4.0 already if any big innovations should be made its a good version number to revolutionize with I suppose.

The cynic in me thinks that a reference to "WP4" indicates that one believes that "WP4" is the next major WordPress version after "WP3".