User blog comment:Soulreaper1234/Soulreaper1234/@comment-Hollow Ichigo Will Kills Ichimaru and Aizen/@comment-1961713-20100413185901

I think he will only mastered his hollow form in the 4th movie - previously against Byakuya & Ulquiorra - the Hollow seems the one who saved him from getting beaten or killed - so maybe the Hollow will appear again and save him again.