The iPhone 5 buzz is growing as Tuesday's Let's talk iPhone media event dawns, but till then we are only left guessing as to whether Apple will unveil an iPhone 5, iPhone 4S or both.

Recently, reports leaked that the upcoming iPhone will be called iPhone 4S'.

9to5mac indicates that the iPhone 4S will be a dual-mode CDMA / GSM phone and the N94 that has been referenced for months. It also believes it means that the iPhone 5 does not exist, while iPhone 4s has been believed to be the next-generation iPhone.

The information about the iPhone 4S may hint that the iPhone 5 may not be be unveiled after all at Tuesday, but it cannot quiet speculations about iPhone 5's slightly larger display and new teardrop design, Gizmocrunch reported.

Examiner's source says there are both iPhone 4S and iPhone 5 models, and the iPhone 5 has been described as teardrop-shaped, with a slimmer body, 8-MP camera, A5 processor and more.