Well, there is the dream that in the near future agent programming might supercede object programming. Even though agent programming has been around for a decade now, the change is going to be evolutionary rathen than revolutionary. Agent programming might not completely replace object programming as not all systems will need to be programmed using agents but it holds great future for the programming world.
But agent oriented programming operates at a different level than object orientation. The two paradigms are complementary rather than trying to solve the same problems.
I second Magel that Agent-Oriented Programming is different from Object-Oriented Programming. Agents are more autonomous than objects; they can decide for themselves; and can cooperate and collaborate with each other.
These two paradigms of Object-Orientation and Agent-Orientation complement each other.