Well, I think what was supposed to happen was:I was wondering how on earth iPP = iPhone Upgrade Programme.
Maybe iPP is simply "iPhone Programme" or "iPhone Purchase Programme"
iUP = Upgrade Program (so shows the price in per month terms)
iPP = Payments Program (so shows the price in per month without AppleCare terms)
But, for some reason they didn't launch the 2 versions of it, and just had an iPP process.
Btw, for those who reserved iPP and want to pay upfront, that's fine - they have to pick the payment method, so i was asked which I wanted even though i'd reserved iPP