No, as far as I know Rivaldo is finished with international football.
What a player at his peak though! One of the best of this generation without doubt.
Sadly, the memory that always comes to mind when I hear his name has nothing to do with his skills on the ball... do you remember the dive he took during the last world cup? After Brazil had won a free, some guy from the other team kicked the ball at Rivaldo's knee... Rivaldo fell to the ground holding his head. The referee didn't really see anything except the guy kicking the ball and just assumed that it hit Rivaldo's head. He came over and sent off the guy that kicked the ball, while in the background you could still see Rivaldo on the ground, only now he was peering out through a little gap in his fingers to see what the referee was doing, haha.
One of the funniest things I have ever seen on a football pitch!

Edit: Woo! I found a video of it on Youtube. Sadly, it doesn't show the angle were you can see him looking out through his fingers... Still funny though! http://www.youtube.com/watch?v=_yjzh...search=rivaldo