People already waiting in line outside New York City's most prominent Apple Store to buy high-end iPhone 5S smartphone and midra

Apple is widely expected to unveil its high-end iPhone 5S smartphone and midrange iPhone 5C.

Apple (AAPL) hasn't even announced its new iPhone yet and some people are already waiting in line outside New York City's most prominent Apple Store to buy it.

Apple is widely expected to unveil its high-end iPhone 5S smartphone and midrange iPhone 5C at a press event on Tuesday. The new handset is rumored to go on sale in the U.S. on Sept. 20.

But MacRumors found four people already camped outside the company's Fifth Avenue retail store in Manhattan to be first to buy the new handsets when they likely go on sale in two weeks.

The new iPhones are the subject of anticipation among Apple fans and are providing fodder for comedians. 

YouTube video creator Matthias posted a funny short that mocks the iPhone 5S in the style of an Apple promotional video. The video says the S in iPhone 5S stands for "same," because the company is simply renaming last year's iPhone 5 to make it sound new.

"I think there is this profound and enduring beauty with how much we're able to get away with," Apple employee Bill said.

"Late Show" host David Letterman chimed in on the upcoming iPhone, too.

"Are you excited about the new iPhone? Every two months we get a new iPhone. This one is thinner, lighter weight, and more slender. So it's much easier to lose in a cab," he said.