Take a sneak peek at Apple's iOS7

Apple's Worldwide Developers Conference is officially underway in San Francisco, but in typical media fashion, an early preview of iOS7 has been leaked.

But with no screenshots or images allowed, 9to5 Mac offered a sneak peek at the new software, through the not so glamourous platform of words.

"The whole OS has that 'skinny jeans' Helvetica Nueue Ultra Light or similar that you've seen in those posters," wrote Seth Weintraub.

Weintraub is referring to banners which are fast appearing at the Moscone Center in San Francisco, with the very thin "7" more than likely featuring the same font which will be used next.

"At the top, instead of carrier signal bars, Apple now has 5 dots that are white or gray to represent the signal," Weintraub also claimed.

Insisting that "the app icons are different across the board", Weintraub offered a brief run-down of the icons based on what he witnessed:

• iTunes is Purple-ish with white (iSync-like arrows instead of a music note).• Camera is Gray gradient and icon is same shape as you see on the lock screen.• Facetime is like it used to be without the gray, and flat.• The Maps icon is a different place. Perhaps near the Spaceship campus?• Compass icon is darker and flatter.• Safari icon is like the Mac circle icon without the silver frame.• Photos icon is a color wheel.• Game Center is similar to the photos icon – totally different than before.

Credited to designer Jonathan Ive, the new-look iOS7 looks set to be "black, white and flat all over" as reported last month, and these claims appear to be true.

Weintraub claims when in "Black mode", the keyboard is black with grey letters, and when in "White mode" it has grey keys with white letters.

The report is backed up by the Wall Street Journal, who says "people close to the company" claim the iOS7 will be "starker and simpler."

"Some suggested that in Apple's next mobile operating system, Ive is pushing a more "flat design" that is starker and simpler, according to developers who have spoken to Apple employees but didn't have further details," the report claims.

"Overall, they expect any changes to be pretty conservative."

What are your final predictions for iOS7? Tell us your thoughts below