Apple has announced that the 8th major iteration of its Mac operating system, OS X Mountain Lion, will officially go on sale to the public in July for only $20 in the Mac App Store. New Macs purchased today will receive a free copy of Mountain Lion when it ships, and developers will receive another preview copy today at WWDC.

“The pace of innovation on the Mac is amazing, OS X Mountain Lion comes just a year after the incredibly successful launch of Lion,” said Philip Schiller, Apple’s senior vice president of Worldwide Marketing. “With iCloud built right in and the new Notification Center, Messages, Dictation, Facebook integration and more, this is the best OS X yet.”

Unfortunately, no specific date in July for the availability of Mountain Lion has been given at this time.

Apple has announced this morning that this year’s Worldwide Developers Conference will kick off on June 11 at San Francisco’s Moscone West (just as we expected). The five-day event will run until June 15 and will share the latest news about Apple’s iOS and OS X Mountain Lion operating systems.

Apple’s stock price hit an all-time high today of $614.48, making it the perfect time for shareholders to sell off some stock. That includes five of Apple’s top executives, who have cashed in a total of $314 million in the last few days that was previously awarded to them in 2008, according to filings with the Securities and Exchange Commission. CEO Tim Cook leads the way, selling a total of 200,000 shares — for an impressive $119,715,170 pay out.

But he’s not the only one…

Earlier today, Tim Cook played coy with how many new iPads they had sold opening weekend, but a mere eight hours later, the numbers are in, and it’s a record setting weekend indeed: Apple sold 3 million iPads in the first weekend of sales alone. That’s three times as many as last year… and with plenty to go around for everyone. Press release after the jump.

This is a surprise: iTunes U has just moved on to its own app, and it’s a whole virtual classroom in app form. Why even go to class?

Half a million. Most app stores would be happy to have half a million users, but that’s just the number of apps Apple has in the App Store. And while they are bragging about their big swinging stats, Cupertino’s got another one to announce: over 100 million apps have been downloaded from the Mac App Store since its debut in early November last year. Wow.

GarageBand is one of the best apps you can show off on your iPad 2 to convince even the most ornery skeptic, and it just got even better: with the 1.1 update, GarageBand is now a $4.99 universal app, and can run on the iPhone, iPad or iPod Touch.

From all the bitching and moaning, you’d think the iPhone 4S was a flop.

But Apple just announced that iPhone 4S preorders topped more than 1 million in the first 24 hours — a new record. No wonder the preorder system was glitchy on Friday morning.

After months of rumors, Apple just gave us a nice little pre-WWDC present: if you don’t mind a little bit of cramping, you can now use Keynote, Pages and Numbers on your iPhone or iPod Touch.

In a followup to Bloomberg’s story this morning, the Wall Street Journal says that Apple is positively confirming the release of the white iPhone 4 this spring. You know… again.

Other than that, there are no details, including whether or not Verizon, AT&T or both will get the device. There’s also no word as to whether Apple releasing the white iPhone 4 after a nine month delay means that the iPhone 5 will be delayed past June, although that’s certainly where the smart money is resting right now.

The white iPhone 4 was originally supposed to come out shortly after the black iPhone 4 debuted in June of last year, but it has been repeatedly delayed due to issues with light leaking through the glass plate and onto the camera sensor.