An icon depicting a white version of the CDMA iPhone 4 has been spotted in iTunes 10.2. Citing reader research, Mac Rumors reports that the icon, which is in the application’s resource files, is different from the existing GSM illustration in that it depicts the antenna break found on the top right side of the CDMA model that is not present in the GSM version. As the report notes, the icon’s appearance isn’t a guarantee that the…