Apple is offering iPhone and iPod touch users to download the newest version of its mobile operating system, called iOS 4.
The new operating system is the heart of the new iPhone 4. The original iPhone and iPod Touch users won't be able to upgrade to iOS 4, as Apple says the hardware on these devices is not supported. iPhone 3G owners will get the update, but some of the features below won't be available, Apple said. Also, if you have an iPad (which runs iOS 3.2), iOS 4 will arrive for you only in September.
The new iOS 4 will allow users to run multiple applications at the same time (multitasking) as well as feature a gaming platform, a built-in advertising system and Apple's proprietary iBook application.
Users will also be able to organize their apps into folders, and there are several enhancements to the built-in mail program, including the ability to keep related messages connected in "threads."
The new software will come standard on the iPhone 4, which will arrive on Thursday to all those who have already pre-ordered it last week.
Basic features
Multitasking
Now you can run third-party apps - and switch between them instantly - without slowing down the performance of the foreground app or draining the battery unnecessarily.
Folders
Organize apps into folders with drag-and-drop simplicity. Get faster access to your favorites and browse and manage up to 2160 apps.
Better Mail
See messages from all your accounts in a unified inbox, organize messages by threads, open attachments in third-party apps, and more.
iBooks
More than an ebook reader, iBooks is also a place to browse and shop for books
Create playlists
Create custom playlists right on your iPhone.
5x digital zoom
Get closer to your subjects by zooming in up to 5x.
Tap to focus video
While shooting video, tap the display to choose where to focus.
Faces and Places in Photos
View photos based on who?s in them and where they were taken.
Home screen wallpaper
Change the background wallpaper on your Home screen.
Gift apps
Send apps as gifts to your friends or family.
Spell checking
A built-in dictionary automatically suggests words and corrects spelling. It works in Mail, Notes, and other apps.
Wireless keyboard support
Pair a keyboard based on Bluetooth wireless technology with your iPhone.