I have contacted them in order to get the ball rolling. Here is their response
Hi Karl
The date has yet to be released.
Pre-bookings can be sent in from the date release of Japfest.
If you get your booking in early this will gain you a more prime location.
Thanks
Kevin
Basically watch this space
There were rumours that it would be a 2 day event this year so I have sent them an email to clarify this