Is Bleach episode 358 filler?
Canon No, episode 358 of Bleach is canon.
#358
Clash!? Xcution attacks Ginjo
激突！？銀城を襲うＸＣＵＴＩＯＮ
Aired 31 Jan 2012
Mochibayo compiled this list from MyAnimeList's labels, because MyAnimeList's episode data is not reaching us at the moment.