There is a debate on whether or not Lelouch is still alive. Even though he appeared to be killed, at the end of the last episode C.C. is shown to be talking to seemingly no one in the back of the hay cart. However at one point she says "Isn't that right, Lelouch?" and looks towards the driver of the cart. This leads some to believe that Lelouch is alive and is with C.C. driving the cart.
Posted in Code Geass