Expected since a few weeks now, Apple has finally pushed Mac OS X Lion to Mac App Store with a price tag of $29.99. To download Mac OS X Lion, you must be on the latest version of Snow Leopard, that is, 10.6.8. It has been released in the form of an OTA update where a user need to download 4GB of data on the system. Apple already confirmed the release during Q3 earning call yesterday and it’s finally here.

Mac OS X Lion comes with tones of new features which includes full screen support for every application, Launchpad, Autosave, etc. Before downloading the new Operating system, you should backup all of your data currently on your Mac OS X.  In addition to Mac OS X Lion, Apple has also refreshed Macbook Airs with improvements in the internal hardware and a backlight keyboard. For all the information on New Macbook  Airs, you may want to checkout Apple Store. Quite a few Lion features have been inspired from iOS, bringing best of both the worlds to your Mac.

So who is upgrading?

Update: We have just got word that recent Mac buyers (as always) would get a free upgrade to Lion. This applies to ones who have made a purchase after 6th July. Details here