I heard that the Bleach fillers might end on episode 109. Episode 110 is "Reopening of the Substitute Business! The Terrifying Transfer Student".
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Considering that the manga isn't that far ahead, I wonder if they will just have Chad, Ishida, and Ichigo gaining their new powers then fighting hollows and stuff until the manga is further along. They could do it before or after the enter Huece Mundo, but it would be cool if they also show the other death gods fighting (especially the bald guy w/ his bankai)
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PS: Chapter 256 was a little off...