While all the other main networks have announced their pricing, O2, the network that brought the iPhone to the UK have held from releasing their pricing. Their reason; They want you in store on the 14th. and you’ve got to be an existing customer.
I’m hoping this means there will be a very good upgrade option for existing customers, but only time will tell. I’ll keep this post updated. Alternatively, keep an eye on all the unhappy customers on O2’s Twitter feed http://twitter.com/#!/O2/