New information from Kubo (probably) debunks Ichigo having a "True Zanpakutou"

[Hagane_no_Saiyajin]

これは詳しく描写してないしあれ以上描写するつもりないので答えますね。２刀の斬月は「刀」と「鞘」です。斬魄刀は鞘があるのか正しい形で、鞘の無いものは鞘状伏と斬月の２振りだけ。その斬月を「正しい形」に宜したのが２刀状態で、卍解で鞘のおさまり、鞘を砕かれて現れたのが「真の斬月」です。砕けた鞘は一護に吸収されたのでやろうと思えば二刀にもできると思うけど、それはまあ一護次第です。



Breaking down the original text it reads (in progress):

 

[KingTempest]

Umm... what's being proposed?

 

[Hagane_no_Saiyajin]

Umm... what's being proposed?

Merging the Merged-Hollow and True Zanpakutou keys together

 

[Jo-Smooth]

Merging the Merged-Hollow and True Zanpakutou keys together

I don't see the correlation

They're separate forms practically speaking regardless. Unless you mean for a post TYBW key

 

[Hagane_no_Saiyajin]

I don't see the correlation

They're separate forms practically speaking regardless. Unless you mean for a post TYBW key

Possibly? I mean, isn't his Merged-Hollow form connected to his Zanpakutou?