Sleepyfans has this chapter out already...no idea who we can use to archive for the moment.

Anyway, it looks like the beautiful fight may be over. I was kinda hoping we'd see if he had a Bankai, but I guess he doesn't need it just yet.

Hey, it's Byakuya!

Anyway, I'm glad Yumichika doesn't have a bankai. For something that's supposed to be rare, too many characters in this series have bankai as it is. If a guy who's only a 5th seat has one, where would it end?

I thought his reiatsu draining was his bankai - guess its just another ability. Not bad, and it's good that this fight ended quickly, 'cus I'm not sure I could've stood much more of that beauty crap.

Well, the main reason I thought he might've is because he said something along the lines of "So, no one can see?" which made me think he had some huge secret he was trying to keep hidden, like Ikkaku did back when he revealed his Bankai.

It was his Bankai...

His Shikai is his multi-bladed sword that drains reiatsu(sp?), and this does that even more so. Plus he called out Kujaku, and then called him out further using a different name for Kujaku. It has to be his Bankai.

Plus what MT said.

Some swords like Rukia's and Tousen's have multiple shikais. That's all it was. He even used another shikai release command to activate the move.

Rukia's sword is dance based. There are names for each dance, but she does not call out her Sword's name for each dance. Neither does Tousen. He clearly called out his swords name twice, first time for his Shikai and the second time was for Bankai.

There is no reason why he would be worried about people seeing his Shikai if thats all it was. It was his Bankai...

Tousen shikai 1:
http://www.onemanga.com/Bleach/126/15/
http://www.onemanga.com/Bleach/126/16/

Tousen shikai 2:
http://www.onemanga.com/Bleach/139/13/
http://www.onemanga.com/Bleach/139/14/

Different release commands used for each move, sword name used each time. Neither is his bankai. Same goes for Yumichika.

Besides all that, a bankai's release command is..... "ban kai," not "split and deviate."

Oh, and while I was snooping around onemanga... here's why he would be worried about someone (namely Ikkaku) seeing his shikai:
http://www.onemanga.com/Bleach/147/09/
Kind of looks like the same move used in this chapter actually.