WWDC, Apple’s annual Worldwide Developers Conference opens tonight at 10.30 pm India Time in San Francisco. Apple CEO Tim Cook will be opening the keynote address where the Cupertino-based tech giant is expected to show off the next iOS, OS X and other services. Apple WWDC 2015: Here’s how to stream keynote address live What we know for sure is that iOS 9, which is the next version of the OS for iPhones, iPads will be revealed. In terms of design, one should not expect too many changes, and the focus will be on stability and efficiency. According to rumours, iOS 9 will run smoothly on older iPhones and iPads. It has also been rumoured that the iPad will now support “dual-app viewing mode,” along with multi-user logins. In addition to this HomeKit, the app for smart homes revealed in iOS 8 will be renamed Home. There’s also a good chance that Siri will look a lot like the colourful version in the Apple Watch and Apple will add ‘Proactive’ a more powerful search assistant to iOS 9 which could be the next Google Now challenger. Whether Siri finally makes an appearance on OS X also remains to be seen. Apple Pay could also get a ‘reward’ programme.

In addition to this, Apple Maps is rumoured to get a transit feature that will allows users to navigate subways, bus services, train routes using the app. With OS X 10.11, the focus will bug fixes, optimization improvements, and security enhancements. In terms of security, the biggest feature that could be offered is called “rootless”, which is a new kernel level security system to protect Macs against malware. Also any connections with non-trusted WiFi routers could be a highly encrypted connection, say reports. Also Apple is expected to launch a new Beats Music streaming service which will be deeply integrated with iOS, iTunes, and the Apple TV.