It is important to remember that the F2x 2 Series may very well share no exterior parts with the F2x 1 Series just as the F1x 6 Series shares no exterior parts with the F1x 5 series and the F3x 4 Series will share no exterior parts with the F3x 3 Series. In fact, in my personal opinion I think this is very likely.
In particular, it may be the case that the 2 Series will get the integrated grill/headlights of the F30, just as the F32 is rumored to, the F1x/F2x LCI's are rumored to, and the next generation 7 series is rumored to.
2008 Interlagos Blue E93 M3 - M-DCT
2011 Salsa Red Jetta TDI Sportwagen - DSG