I think it's fair to assume that PCP will be available for the sake of making sales. Without it, they are risking a LOT of lost sales. For me it's more a question of when not if and it sounds like the when might be today!
Just got off a call with them and apparently the PCP option at the moment is basically to see how many people click on it! suppose they are trying to work out appetite.
Link currently goes to a Barclays page with the value of a model S that you cannot change