I think we will see Kakashi vs. Kabuto; they've set the two up as rivals. Orochimaru mentions more than once that Kabuto 'is strong, but only about as much as Kakashi.' Jiraiya mentions that the 'glasses guy has the same strength level as Kakashi.'

Kakashi also mentions being frustrated with his level of strength after Kabuto manages to escape from him. His very next appearance is the cliff-climbing training on his way to meet Sasuke.

All this set up makes me think the two will definately meet, and that Kakashi will be stronger than the previous time.