Recent "spy" photo's lead to believe that their is a new Z!! Not an updated Z4, but a Z9 (Z6 to some).

       Pictures of the prototype that had published in January were taken in Munich, Germany, and has a fabric roof with the option of a hardtop retractable roof. If it's not a new Z, then the Mercedes SL definitely better be ready for war!

       It's much larger than the Z4, so it is confirmed that is not an updated Z4!!

Although, some sources (that apparently are outdated) are saying the Z4 is "growing up". In other words, getting some more length to add to the sleek look.

       But to the most up-to-date, it definitely is not the Z4. It now has side window covers and the hardtop retractable roof!

Although uncertain on the name at this time, the SL better watch out!!