Rumors have surfaced that Pagani is working on the final Zonda which will feature the name 764 Passione.
The last Zonda is based on the current Zonda F chassis and the power will come from a V12 AMG M120 7.3 liter unit that produces 760 HP (566kW).

This means that the 764 Passione will feature 20 HP (15kW) more than the Zonda R and 90 HP (67kW) more than the Zonda Cinque. Same voices say that the last Pagani Zonda will come with a manual transmission and will have the bodywork painted in purple. 

The brake calipers will also be painted in purple, while the word "Passione" will appear onto the valve covers. 

Source: PistonHeads