That's been the most anticipated power-up for Naruto ever since he discovered Chakra Mode. I hope it happens in this fight! Sage Mode is what made Naruto Kage Level in his own right, without the Kyuubi's help... combining the two would be the most "worthy" form for Naruto.
Originally Posted by almara
Currently, it's kindof annoying/clunky that Naruto has to choose between modes, each of which gives him unique benefits that are still somewhat similar at their core (extra reach, sensory powers, more chakra, more strength/speed/durability)... Sage Mode has become something that Naruto only uses with his Kagebunshins, and is treated practically like a Summoning Jutsu.
Not only that, Naruto was working on improving his ability to enter Sage Mode and extend its duration prior to his Chakra Mode power-up, and ever since then it's been forgotten except for in a few clutch situations. Considering Naruto is the only "Perfect" Sage in the series, it makes no sense that he's worse at actually *utilizing* the mode than Jiraiya, Kabuto, or Orochimaru... each of them is superior to Naruto in some way when it comes to utilizing Sage Mode.