Kenpachi's sword is always in shikai release mode!! when will
people get this in their head! It was mentioned that his spiritual
is overspilling like ichigo hence, both have their zanpakutou in
full shukai release mode 24/7
Zaraki's zanpakuto is in a released mode, but not yet shikai since
he does not know its name.
From wiki,
The shikai (始解, shikai? initial release) is the
first "upgraded" form available to a zanpakutō. To
activate it, the shinigami needs to learn the name of
their zanpakutō.
Shinigami who are unable to communicate with their
zanpakutō wield a nameless version known as
asauchi, meaning shallow cut.
In rare cases, a zanpakutō, once released, will remain
in that state indefinitely. Such zanpakutō are described
as a full-time released form type, such as those of Ichigo
Kurosaki and Kenpachi
Zaraki.
