On 19 October, Apple sent out invitations for a 27 October event, and for some of us this event is even more exciting than September's iPhone 7 launch. That's because we're expecting the long-awaited Mac updates that we have been hoping for since early last year.

Apple's invitation is an interesting one, sticking with the dark background that we saw from the iPhone 7 event last month but with a splash of colour created by what looks like powdered paint.

It's possible that the dark background hints at new colours for the Mac and potentially if the iPad if Apple decides to use this event to update it.

The tagline is the most exciting, and the biggest hint towards a Mac launch. Back in 1984, when Steve Jobs introduced the first Mac to the world, the Mac said "Hello" on its screen. Apple's "Hello again" tagline is likely to be a reference to that first unveiling more than 30 years ago. We're expecting a new MacBook Pro. Other possibilities include a new Mac Pro, new MacBook Air and new iMac. We might even see a new MacBook, a new Mac mini, a new iPad mini... The possibilities are endless.

Turn to the next slide to see more of Apple's previous cryptic invitations, as we remind ourselves of events past and the clues that Apple sneakily (and sometimes not so sneakily) hid within its invitation designs.