The much awaited Apple’s annual Worldwide Developers Conference WWDC 2016 would be held tomorrow at Bill Graham Civic Auditorium in San Francisco. The Californian tech giant has already rolled out invitations stating that the event will kick off at 10:00 PST.

So what does this event have for us? Here are the four things that we can expect.

iOS 10

Apple is expected to introduce its next version of operating system for the iPhone and it will be called iOS 10. The final version of the OS will be rolled out to the general public in the autumn along with iPhone 7, while the event will see the release of a beta version for the developers.

Speculations suggest that Siri, Apple’s virtual assistant, will be enhanced, which would pick up users’ phone calls and would explain to them why the user cannot attend the call. It would also transcribe their voicemails, notes

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Further, it is said to release an app named Home, which would serve as a hub for all your smart home devices.

OS X 10.12

If rumours are to be believed Siri will be integrated into OS X 10.12, along with a Siri microphone icon, which would open up similar to Microsoft’s Cortana in Windows 10. The company has been testing the versions of OS X with Siri for the past four years.

Watch OS 3

Apple will likely to announce the third major installment of the Apple Watch’s operating system, which would have support for third-party watch faces. This would allow developers to customize the Watch’s home screen.

Apart from few improvements to fitness tracking is expected, and a slew of new health apps.

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Apple Music

Last year at WWDC 2015, Apple unveiled its music streaming service and exactly one year later Apple Music is being dramatically overhauled. The company will release redesigned user interface that includes Beats 1 radio, and better incorporate the streaming and download elements of the service, as per the reports in Bloomberg and 9to5Mac.