i think the only time we see itachi again is perhaps when sasuke makes his reappearance... the 2 characters seem to be interlinked in the sense that kishimoto places more emphasis on sasuke's hatred for itachi rather than itachi going for naruto.. i feel that in terms of kishimoto view's (not the story) he rather work more on sasuke against itachi rather than itachi capturing naruto because from the story i feel he is laying the ground work for a potential mega clash between sasuke and itachi in the near future..