Is Bleach episode 354 filler?
Canon No, episode 354 of Bleach is canon.
#354
Ichigo vs. Ginjo! To the Game's Space
一護ＶＳ銀城、ゲームの空間へ
Aired 27 Dec 2011
Mochibayo compiled this list from MyAnimeList's labels, because MyAnimeList's episode data is not reaching us at the moment.