Apple has just sent out invitations for a Mac-themed event scheduled to take place next week, on October 20. The invitation -- which you can see below – depicts a touchpad-like shape with an Apple logo cut out at the center and a lion peeking out from behind. And just in case you are unaware of Apple’s history of using big-cat names for its OS updates, the company explicitly tells press members to come take a "sneak peek of the next major version of Mac OS X."

Distributions of Mac OS X 10.7 have been making the rounds inside Apple under the internal code-name "Barolo" since early 2010, pple's iLife and iWork suites of lifestyle applications and productivity software are also supposedly due for a revamp, while on the hardware side there are rumors of a new MacBook Air and some minor updates to the MacBook line.