As Apple and Verizon are rumored to be in negotiations for a summer 2010 CDMA iPhone launch, the nation's largest wireless carrier and the handset maker are believed to be at odds over pricing. In a new note to investors Tuesday morning, Maynard J. Um of UBS Investment Research said that a new iPhone is expected to launch in mid-2010. Whether that phone would be available for Verizon's CDMA networ