I thought this was interesting I found a few other results saying that an iPhone will be coming to Verizon this summer and it will be announced in June at the WWDC. I'm not saying that I totally believe them just thought they were interesting so take a look at them.
The TWiT Netcast Network with Leo Laporte
(you have to listen to the netcast, Scott Bourne confirms he has talked to a verizon exec who says an iPhone is coming)
iphone is def coming to verizon wireless really soon... - BlackBerry Forums at CrackBerry.com
(Read the ones from onthelowlow, he says he was at the meeting where they confirmed an LTE iPhone would be announced at WWDC)