The Matrix 4?

[Walts Ghost]

Originally Posted by Aint it Cool

Matrix 4 & 5 A Possiblity

Keanu says he met the Wachowski's (no emphasis on the word brothers), for lunch over Christmas and stated that they had completed work on a two picture script treatment that would see him return to the world of the matrix as Neo. Says the brothers have met with Jim Cameron to discuss the pro's and con's of 3D and are looking to deliver something which has never been seen again. keanu stated that he still has an obligation to the fans to deliver a movie worthy of the title "The Matrix" and he swears this time that the treatment will truly revolutionise the action genre like the first movie. Wachowski's are working on a movie called "Cloud Atlas" at the moment, once that concludes they will talk again.

Source

Theres more at the link regarding some of his other potential projects but it sounds like they're really considering doing it. I'd be up for another go with these movies