Apple has unveiled its latest tablets, the iPad Air 2 and iPad mini 3, along with two new desk-top models.

Only 6.1 millimeters thick, the iPad Air 2 is the thinnest tablet in existence. It's also equipped with Touch ID, Apple's newest security invention.

The new tablet also includes Apple Pay, the company's new payment tool.

The iPad Air 2 is priced between 3,600 and 5,000 yuan.

A number of market observers are suggesting the two new tablets, in particular the iPad mini 3, may not sell well.

Bryan Colello is a senior tech analyst with research firm Morningstar.

"First, the iPad I think customers are holding on to the ones that they already bought longer than anticipated. they see less of a need to buy the newest model, and then secondly, has been the rise of the large screen phones. Customers hold a 5 inch phone don't necessarily need or want to pay for a 7 inch tablet."

The two desktop Macs have 27-inch high-definition screens and a new operating system called OSx Yosemite.

The two desktops aren't cheap. They're retailing at $250.

Phil Schiller, Apple's senior vice president of Worldwide Product Marketing speaks during a presentation of the new iPad at Apple headquarters in Cupertino, California Oct 16, 2014. [Photo/CFP]

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