According to Keanu Reeves: "Matrix 4 and 5 are Coming". At an
event that took place at the London International School of
Performing Arts - 'Reeves revealed that he met with the Wachowskis
around Christmas. They told him that they completed script
treatments for two more "Matrix" installments. They are planning
to make the films in 3D and have already met with James Cameron
to discuss the advantages and disadvantages of the technology.
Reeves added that he's excited to return as Neo and promised that
the treatments will truly revolutionize the action genre like the
first "Matrix" film did.' - Slashdot 2011-01-24