Slightly refreshed model with antenna improvements, the CDMA chip and some other unnoticeable hardware and software changes. Also some exclusive Verizon only Apps.
And the name of this iPhone model will be separate from the 3GS and 4.
This model will be called iPhone 4Z (4Z in a similar fashion to the 3GS logo)
or maybes iPhone 4V?
Just my predictions.
More likely "iPhone 4 for Verizon"