It would seem that the Liverpool tickets have been online for a week! You can book online by following the link below or telephone one of the following ticket agents:
00 44 (0)151 256 5555
00 44 (0) 151 233 3007
00 44 (0) 161 832 1111
None of the the other tickets are on sale yet, as and when we get more info we will let you know.
http://www.ticketline.co.uk/event_details.asp?CPFlag=0&EventId=17110 is the direct link.