Built on a rock-solid UNIX foundation, OS X is engineered to take full advantage of the technologies in every new Mac and to deliver the most intuitive and integrated computer experience.

iPhone OS 4 will include over 100 new user features for iPhone and iPod touch owners to enjoy. And for developers, a new software development kit (SDK) offers over 1500 new APIs to create apps that are even more powerful, innovative, and amazing.

iPhone OS 4 will ship this summer for iPhone and iPod touch, and for iPad in the fall. A developer beta is available now.

100+ New User Features

With iPhone OS 4, iPhone owners will enjoy over 100 new features that make it easier to interact with apps, manage email, read books, and more. New features include the following:

• Multitasking

  Developers will have access to seven multitasking services, which will allow tasks to be performed in the background while preserving performance and battery life. So you’ll be able to make a Voice over IP call while playing a game or checking email, find a restaurant on Urbanspoon while listening to Pandora, and more.

• Folders

  Organize apps into folders with drag-and-drop simplicity. Get faster access to your favorites and browse and manage up to 2160 apps at once — many more than the current limit of 180 apps.

• Even Better Mail

  See messages from all your email accounts displayed together in a unified inbox, switch between inboxes more quickly, organize messages by threads, and even open attachments in third-party apps.

• iBooks

  The best way to browse, buy, and read books on a mobile device. Easily flip through the pages of a book you’ve downloaded from the iBookstore while listening to your music collection. Browse tens of thousands of books — many of them free — by title, author, or genre. You can even check out reviews and read sample pages before you buy.

Jerome York

1938-2010

Apple CEO Steve Jobs on Thursday expressed sadness at the passing of Apple Board member Jerome (Jerry) B. York, who died this morning at the age of 71.

“Jerry joined Apple’s Board in 1997 when most doubted the company’s future,” said Jobs in a statement. “He has been a pillar of financial and business expertise and insight on our Board for over a dozen years. It’s been a privilege to know and work with Jerry, and I’m going to miss him a lot.”

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140,000 apps. And counting.

iPad will work with almost all of the apps designed for the iPhone. Just download them from the App Store. Or, if you already have apps for your iPhone or iPod touch, you can sync them to iPad from your Mac or PC. Then run them in their original size or expand them to fill the screen. And developers are working on new apps designed specifically for this amazing device and all the things it can do.

App Store

Visit the App Store to browse a section of the store featuring apps specifically designed for iPad. Or browse iPhone and iPod touch apps, including entertainment apps, productivity apps, social networking apps, games, and more. Then buy and download apps wirelessly, right from your iPad. No matter what you need, there’s bound to be an app for it.

Pre-order

Click here to pre-order your Apple iPad today.

Refined, not reinvented.

Mac OS X is renowned for its simplicity, its reliability, and its ease of use. So when it came to designing Snow Leopard, Apple engineers had a single goal: to make a great thing even better. They searched for areas to refine, further simplify, and speed up — from little things like ejecting external drives to big things like installing the OS. In many cases, they elevated great to amazing. Here are just a few examples of how your Mac experience was fine-tuned.

A more advanced, more nimble Finder.

The Finder has been completely rewritten in Cocoa to take advantage of all the modern technologies in Mac OS X, including 64-bit support and Grand Central Dispatch. It’s more responsive from top to bottom, with snappier performance throughout the Finder. And it includes new features such as customizable Spotlight search options and an enhanced icon view that lets you thumb through a multipage document or watch a QuickTime movie.