Can I get the Verizon iPhone even if I'm not eligible for an upgrade?
Every single one of Verizon's 93 million customers is able to purchase an iPhone at any time during their contract with Verizon Wireless. However, only customers that are upgrade eligible will be able to do so at the subsidized pricing of $199 (16GB) and $299 (32GB).
If you aren't eligible to upgrade at this time, you can still buy the iPhone 4 on launch day or thereafter at full retail price. Full retail price is $649.99 (16GB) and $749.99 (32GB).
Not sure if you're eligible? Check out this link on how to check your Verizon iPhone 4 upgrade eligibility.