Apple is working on "amazing" new products for an autumn launch, CEO Tim Cook has revealed, adding that Apple will introduce "exciting new product categories" in 2014.

Speaking at the company's quarterly earnings call on Tuesday, Cook said: "Our teams are hard at work on some amazing hardware, software and services that we can't wait to introduce this fall and throughout 2014."

Tuesday's earnings call revealed that Apple's net profit dropped during the second quarter of 2013, but Cook said: "We continue to be very confident in our future plans."

"Apple has many distinct and unique advantages as the only company [in] the world with world-class skills in hardware, software and services," Cook continued. "And, of course, we have a tremendous culture of innovation with a relentless focus on making the world's best products that change people's lives."

"This is the same culture and company that brought the world the iPhone and the iPad, and we've got a lot more surprised in the works," he asserted.

Later in the earnings call, Cook reiterated that Apple has "got some really great stuff coming in the fall and across all of 2014."

In addition to the expected iPhone 6, iPad 5 and iPad mini 2, Cook could be referring to the rumoured iWatch and Apple television set in his comments about new product categories.

Last week, Apple board member Bill Campbell hinted that an iWatch is in the works, and it has been reported that Apple has a team of 100 designers working on a smart watch device. A patent application published earlier this year adds evidence to the iWatch rumours, too, as it describes a wearable computer with a flexible display that wraps around the wrist.

Apple co-founder Steve Wozniak this week predicted that Apple is working on new products that will "surprise and shock us all," helping bring the company's falling share price back up.

Cook's revelation that these new products won't be arriving until late this year could come as a disappointment for some, who expected to see a new product launch as early as this month.

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