I'm very much looking forward to Reloaded. As for plot, we get to see more of.... oh man...blanking here, what the hell's the name of the Human's underground city, "the last remaining human city."?
Anyway's, we know the machines want to enslave humanity, (for energy production, not food

), and that Neo is now the Badass-du-jour. That SilverNinja dude is obviously the Machine's answer to Neo's new-found power. So he's our Antagonist. Agent Smith has been 'cloned', 'replicated' and will continue to irritate our heroes. What else do we know? Any other speculations?