Apple's upcoming event on 9 September is one of the hottest topics of discussion right now. Everything about what Apple is planning for the event remains a mystery. However, courtesy of a few leaks in the past, we are able to interpret the possible product launches next week. For weeks now, there have been steady rumours about the next iPhones, iPad Pro and other devices. Based on that, we have listed a few possible announcements expected at the event.

New iPhones

To begin with, Apple is planning to launch the annual upgrade to its iPhone smartphone, reportedly known as iPhone 6S and iPhone 6S Plus. The two new iPhones are expected to undergo massive upgrade, but sustain the same design as its predecessors. At 4.7 and 5.5-inches, iPhone 6S and iPhone 6S Plus will feature upgraded build quality, 12mp camera, Force Touch display and advanced A9 processor.

[Read: 8 Things You Must Know About The New iPhone Before Launch]

New iPads

Apple was long in the news for its biggest 12.9-inch iPad Pro, but the tablet never saw the day of light. But it finally appears that the 9 September event will witness the official launch of the new iPad Pro in its full glory. As per the leaked specs of the tablet, the iPad Pro is expected to feature a Force Touch display with 2,732 x 2,048 pixels, larger USB Type-C port, multi-user long, Bluetooth stylus and more.

In a recent report by 9to5Mac's Mark Gurman, Apple is accompanying the iPad Pro release with all-new new iPad mini 4. The smaller tablet is expected to be thinner with feature upgraded chipset and split-screen apps.

Apple TV

Apple TV hasn't been upgraded in years. The upcoming event next week is a good platform to showcase the next-gen Apple TV set-top box. According to IGN, the new Apple TV will feature a new remote, Siri integration and an App Store. The forth-gen set-top box by Apple is expected to be priced higher than its predecessor, ranging between $149 and $199. Once released, the new Apple TV will be available in October.

iOS 9 and WatchOS 2

Apple follows a traditional upgrade cycle for its software, both mobile and Macs. At the 9 September event, the Cupertino tech giant will launch the final build of iOS 9, which was originally demonstrated earlier at the company's WWDC event. The new OS for iPhones will power the next-gen iPhone 6S, iPhone 6S Plus and the iPad Pro.

Apple iOS 9 is expected to feature several upgrades and new apps along with better optimisation.

[Read: iOS 9: Six Key Features that Make it Apple's Best Mobile OS]

In addition, Apple is also expected to roll out the watchOS 2, which was announced at the WWDC. The new OS, specifically designed for Apple Watch smartwatches, will pack upgrades to Timepiece, Time Travel and Health and Fitness.

Apple's event on 9 September will be full of new product launches and important announcements. As usual, Apple will livestream the keynote on its official website. For the first time ever, the event can be streamed on a non-Apple browser, Microsoft Edge on Windows 10, in addition to regular Safari, iPhones and iPads.