Apple has announced in their Q3 financial earnings press release that OS X 10.8 Mountain Lion will be released tomorrow. It will be available in the Mac App Store for $19.99 to all Snow Leopard and Lion users.

We’re thrilled with record sales of 17 million iPads in the June quarter,” said Tim Cook, Apple’s CEO. “We’ve also just updated the entire MacBook line, will release Mountain Lion tomorrow and will be launching iOS 6 this Fall. We are also really looking forward to the amazing new products we’ve got in the pipeline.

Mountain Lion brings even more of the iPad and iOS experience back to the Mac, including renamed Contacts and Calendar apps, and new Reminders, Dictation, AirPlay, Game Center, and Notification Center, and unique features like PowerNap and Gatekeeper.

Are you planning to upgrade to Mountain Lion or will you be sitting this one out?