There are endless rumors about apples upcoming iPhone 4G, whether it will be supported by Verizon's CDMA network or not. On the iPhone 4G prototype picture it has a micro-sim slot which means that it won't be available on Verizon. But according to some sources apple is going to release two iPhones in month of June and at least one is supposed to be switched in Verizon's CDMA network. This supposition is based on peoples expectation for this kind of product as according to The Wall street Journal whether to type iPhone in Google, first suggestion will be “Verizon iPhone 4G". Well, this really proves the users will for a Verizon iPhone. On the opposite some sources inform that Verizon's 4G network is planned to release in 2011 and it's practically impossible to get iPhone in Verizon's 4G network, even if apple decides to release Verizon iPhone.
Rumors were about the negotiation between Apple and Verizon since the release of iPhone of first generation as it seems to be profitable cooperation for both companies. But there was no formal word from either of companies about any negotiation till today.
In fact Apple does not need to launch on Verizon, as they're getting a lot of revenue with AT&T. Verizon needs the iPhone because it would make them become very huge. Nevertheless, Apple won't be able to launch the iPhone on Verizon till the contract with AT&T won't be expired.
So we can hope for the cooperation of these two companies in 2011.