Barring company executives and a few employees, nobody knows exactly what Apple will unveil at its media event scheduled for Sept. 9. But that hasn't stopped Apple observers from speculating.
Many think the technology giant will reveal the new iPhone 6 with both 4.7-inch and 5.5-inch screens—bigger than the 4-inch screen on the iPhone 5s and 5c.
Such a product would allow Apple's stock to finally break from its "pretty consistent trading pattern" of rising ahead of the announcement, only to tumble in the months following the release, Dan Niles, founding partner at Alpha One Capital Partners, told CNBC on Monday.
"This one, I think, has the potential to be different … This, in my opinion, is the best product that they've had since really the 4 or the 4s, which is when they introduced the two cameras on the phone; the front and the rear-facing," Niles, an Apple shareholder, said on "Squawk Alley." "I think that will drive a big upgrade cycle because you're going to get a fatter, wider phone. I mean, I haven't upgraded for three years and I think there's a lot of other people who have been waiting for a compelling reason to move. I think this will give it."