Apple's newest software update, the iOS 5.1 operating system, was announced yesterday along with the new iPad and Apple TV launches. Although the new devices aren't available for purchase until March 16th, owners of other Apple products are able to run the new updates now. But what's so different about the upgraded operating system? Here are some key things to know before users make the switch:

1. Lock Screen Camera Slider. With a new update comes a new home screen. The upgraded operating system dazzles up the slide to unlock feature. The process of taking photos has become slightly easier, with users able to snap a photo from the lock screen. No passcodes are necessary; letting photo-savvy iPhone owners take pictures even more instantaneously.

2. Siri Speaks 6 Languages. Apple expanded its world audience even further with the addition of a Japanese version of Siri. The artificial intelligence software now supports six languages: English, British English, Australian English, French, German, and Japanese.

3. Battery Life Concerns. The new update was said to address user's gripes with the battery life issues experienced by owners of the 4S. The previous operating system, iOS 5, was responsible for draining the device's battery life. The updated system is the product of Apple's efforts to improve the power issue over the last couple of months.

4. Genius Mixes and Playlists. The software upgrade also offers new Genius mixes and playlists for iTunes Match subscribers. This is Apple's way of making it more convenient for users to discover new music, movies and TV shows. The software suggests new content based on what the user has already viewed or listened to.

5. Upgraded Photo Stream. A new feature allows users to delete photos directly from the Photo Stream. In the past, the app which enables photos to appear on all iOS devices automatically, would require users to take over 1,000 new photos before others were able to be deleted. Now Apple product users can delete photos whenever they please.

The complete list of upgrades is available on Apple's official website, along with directions on how to install the update.