That's something I've had arguements about. Some people still think that Pre-Urahara Traning Ichigo was just using an enhanced form of his sealed Zanpakutou.
Ichigo first sword was sealed Zangetsu with a lot of spirit pressure but reuglar sealed sword
more later gotta run
there are basically two schools of thought, people who say its permanently released in shikai, and people who think it's sealed and cannot be released. And each side is convinced they are right.
EDIT: Just thought of this though, if it is released what abilities does it have?
Kenpachi's zanpakutō has no known name, even to its owner. Kenpachi is the only captain of the Gotei 13 who doesn't know the name of his sword, nor can he use his final release as a result. Despite not knowing its name, it is constantly released. The sword's appearance is a reflection of Kenpachi's own practice of weakening himself to fight: it is a seemingly worn-down and dull blade with a guard that extends inward from its center. The blade is much longer than that of a standard zanpakutō. Despite its appearance, it is quite capable of cutting through most objects due to Kenpachi's immense amount of spiritual power. This is demonstrated when he stabs straight through Ichigo's zanpakutō, Zangetsu.
It appears that after his fight with Ichigo, Kenpachi wishes to learn more about his zanpakutō because he wants to become stronger and can identify with the pain of not having a name. However, even then, he is not yet capable of communicating with his zanpakutō, and it is implied that he continually tries to learn from his zanpakutō so that he can achieve a new tier of power. Zangetsu notes that Kenpachi's disharmony with his sword causes the two to damage each other's power.
# ^ Bleach Official Character Book SOULs; page 258.
Off the Kenpachi subject and on to Yoruichi I read that she used her Zanpakuto in sword frenzy Ova to fight a hollow did any one see it beacuse i watch again last night like 5 times and didn't see it. Did anyone see it in the Ova i would like to know what it looks like.
on to Urahara last night i had a dream of what Urahara's bankai would look at because Urahara said to Renji that the final release of his zanpakuto was not capable of training others or lending power to them.
here is his shikaihttp://upload.wikimedia.org/wikipedi...h_Benihime.JPG
here what i pictured http://img82.imageshack.us/img82/383...osuke01oa0.jpg
I know it sloppy but i put it together in like 30 seconds
he doesnt know the name even though it is in Shi-Kai which was the condition of Zangetsu before ichi learned its name so we do see that it is possible to have a powerless Shi-Kai will he ever learn its name? i dont know but the author said he would like to delve into ken-chans past in future releases so it may be a gateway into him getting Shi-Kai or Ban-Kai, Chance? 50\50
you have to know the name of the sword for it's shikai or it's just a regular zanpakuto
Shikai is the first "upgraded" form available to a zanpakuto. To activate it, the shinigami needs to learn the name of their zanpakuto. This is not as simple as simply picking a name, as the living spirit of the zanpakuto chooses its own name. Therefore, the shinigami must be able to communicate with their zanpakuto effectively. Achievement of the initial release is a mark of expert control of a zanpakuto, and it appears to be a requirement for advancement within the shinigami ranks, as most seated officers and presumably all lieutenants are capable of the initial release.
After first learning the zanpakuto's name, the initial release can be performed at will simply by speaking a command followed by the zanpakutōos name. The command phrase varies between users and often relates to the zanpakutō's signature ability, or hints at the nature of its spirit. This step may be bypassed by expert shinigami, usually those who are at least approaching discovery of their final release. In rare cases, a zanpakuto, once released, will remain in that state and will not have a sealed state. Such zanpakuto are described as a full-time released form type.
Once the initial release is activated, the zanpakuto will change form to access whatever special abilities it is capable of. They usually remain in the form of a sword, but the type of sword differs radically among various zanpakuto. The special abilities of the zanpakuto, like the zanpakuto itself, have specific names that usually must be announced to fully activate the effect. As Ichigo's zanpakuto, Zangetsu, explains, knowing the name of an attack and not knowing it makes a difference in the amount of power that attack has.
nameless zanpakuto are called Asauchi Soul Society is very adamant about zanpakuto having names. So much so they even give an overall name to blades so weak they don't have their own; Asauchi. That's what the blank blades carried by Shinigami who are too weak to gain a spot in one of the 13 Divisions are called. Appearance-wise, it's a normal katana with a plain, oval crossguard. Since it's so weak it can't find it's own name, it obviously doesn't have a Shikai, let alone a Bankai. The only thing that sets it apart from a mundane katana is that it is capable of harming a shinigami.
This is what kenapchi's is classified as right now because he doesn't know it name although it does have a name kenpachi doesn't know it he thinks it Zanpakuto is a tool not a living being. kenpachi sword gets all it power from him.
Also Renji stated when he first met Ichigo not knowing your Zanpakuto name means it's not a true sword and it has now power.
Kenpachi's sword doesn't have any real power because kenpachi is suppress it with is on spiritual power so they are damaging each other. Kenpachi is not in shikai beacuse he does not know it's name no matter how my spiritual power you have you can't froce your Zanpakuto in to shikai or bankai you need to know the name for shikai. For Bankai you need to materialize your Zanpakuto's Avatar and beat it in to submission you you need to commutate with your Zanpakuto which Kenpachi can't
trust i think your right but the facts state he has a powerless Shi-Kai so he has a powerless Shi-Kai send a letter to the mangaka and ask for it to be corrected other then that, no dice