iPhone 6 launch: what do you want from Apple's new phone - and wearable?

Apple is launching the iPhone 6 on Tuesday 9 September. What features would you like to see? Photograph: Aly Song / Reuters/Reuters

Will it have a reversible USB cable? Are rumours of “unscratchable”sapphire screens true? And an NFC payment system? And just how big will the iPhone 6 be, exactly?

How about the rumoured wearable device? Is this the must-have exercise accessory you’ve been waiting for? Is your doctor pacing the floor impatiently, demanding your digitised biometric data? Or is this a long shot for Apple, and one you don’t care about?

Whatever Apple has planned will be revealed by CEO Tim Cook on Tuesday at Apple’s biggest launch event yet, with 2,500 people invited to the Flint Centre in Cupertino, California. The company is also expected to introduce its new iPhone and iPad software, iOS 8, which includes many new features focused around flexibility and interaction with Apple’s desktop and laptop computers.

You’ve heard the rumours – but what features would you like to see from the new iPhone? Are you happy with what you’ve heard about it so far? Or are there more design features Apple could add before you decide to buy? Let us know in the comments below and we may feature some suggestions above the line.