Im just done watching the 244th episode of bleach and i just love these filler episodes of then. I don't want to be a spoiler here so watch it in your own risk hehe. Howecer let me just give you a hint... My favorite Soul Reaper "Kenpachi" had his appearance and had fought with *******.
So far here's the current status of all the zanpakutou
Zanpakutou that was defeated by their wielders
Zanpakutou that was being killed by other wielders (whose unfortunately, will never had a chance to return to their masters)
Sode no Shirayuki
Not yet defeated
Sousyo no Kotowari