A supplier of tech giant Apple hinted the upcoming release date of the company's iPhone 6 and iPhone 5S.

Late Tuesday, Cirrus Logic Inc., which supplies audio chips for the iPhone and iPad, said sales of a particular chip are slowing down as an unnamed customer moves to a newer component.

This claim contradicts the report of an analyst who claimed that Apple's iPhones launch will be delayed. According to Jefferies analyst Peter Misek, the rumoured low cost iPhone 5S will most likely be delayed. Misek also said that the possible cheaper iPhone launch could be pushed to this year's fourth quarter and an iPhone 6 probably would not come out until 2014.

This is also supported by another analyst who speculated a possible delay on iPhones' release date this year. According to a report by KGI Securities analysts Ming-Chi Kuo, people should expect to see the aforementioned device later this year.

The rumour is fuelled by the speculation that the release iPhone 6 and iPhone 5S will be postponed due to US carrier T-Mobile's delayed availability of the current iPhone. It has been less than a week since T-Mobile announced the long-awaited release of the iPhone 5 on its network free of contract. The smartphone will make its debut with T-Mobile on April 12. Pre-orders for the handset began for the iPhone 5 on Friday.

With the delayed availability of the handset in T-Mobile, Apple may not release the successors of the handset yet. Rumours claimed that Apple is set to unleash iPhone 6 and iPhone 5S in June.

iPhone 6 is speculated to include a Retina or IGZO screen display, A7 quad core chip processor, iOS 7, 128GB internal storage, 13 mega-pixel camera, and longer battery life. The lack of NFC support on the iPhone 5 was one of the biggest criticisms aimed at Apple's smartphone. The rumoured cheaper iPhone 5S, on the other hand, is reported to sport a plastic casing, 4-inch screen display, dual core processor and 8-megapixel camera.

The Cupertino-based tech giant brushed off the rumours surrounding its devices.