Apple Worldwide Developers Conference attendees watch large projection screens during the keynote in the Presidio Room at the WWDC at Moscone West.[Photo/CFP]

2015 iOS 9?

The iOS 9 has been heavily rumored to debut during this year's event, and according to media reports, iOS 9 will be slimmed down to work on older devices, which means that iPhone 4S and iPad 2 users will be able to update their devices.

A brand new Apple TV that could be the central hub connecting all of a user's smart devices will possibly be launched, according to the Internet rumors.