It looks like Ferrari fans are just a few weeks from seeing the debut of a successor for the 599. 

The successor carries the codename F620 for now. That would indicate that the car will get the 6.3 liter V12 from the Ferrari FF that produces 660ps. However, Ferrari might further tune this engine up to around 700ps.

Current rumors from the German magazine Autobild indicate that the car will have an aluminum chassis with many carbon fiber components.  

The 599 debuted in 2006 taking the over for the 575M. It is powered by a 6.0l V12 with 620ps and 608Nm of torque. Ferrari improved the car in 2009 by offering the 599GTO with 670ps and 620Nm of torque. Just 599 GTOs were made. 

The 599 took over for the 575M, which used a 5.7l V12 with 515PS and 588Nm of torque. That car was in production from 2002 to 2006. 

Source: Motor Authority