Apple has been sending invites out for an event on 20 October.

So, what has the Cupertino contingent been cooking up over at Infinite Loop that it wants to show off to the world?

A 7-inch iPad? A Verizon iPhone? A touchscreen iMac?

The answer is probably "none of the above" as the invite hints at a Mac-event, and the lion looming at the side of the Apple logo could be a clue.

Chances are that the event could be in aid of the latest Mac OS X incumbent - 10.7. And chances are Apple is going to be continuing the big cat theme with something lion-related.

It's only been just over a year since Snow Leopard hit the shops, but Apple often announces its new platforms a while before they go live.

So, expect Mac OS X 10.7 Lion to be announced on 20 October.

Well, either that or Apple is opening the iZoo.

Mac Cleaning Software Recommended Mac Cleaning Software: See CleanMyMac 3 in action on your Mac ( Try it free ). It has all the tools to take care of your system. Full cleaning, optimization, health monitoring, and even more to help your Mac run at full speed. You can uninstall unwanted apps, fix system errors, and improve performance — just in a few clicks. During a full scan with CleanMyMac, the average user finds about 74 GB of junk to clear out. Reclaim more free space on your hard drive and make your Mac as good as new.