Apple announced many new products, like the iPhone 6S, iPad Pro and Apple TV, at the Bill Graham Civic Auditorium in San Francisco, California on Wednesday. The company will soon follow by releasing its next mobile operating system, iOS 9.

The New York Times reports that its staff tested preview versions of iOS 9 for two months on different Apple devices. To help you prepare for the iOS 9 release, we have listed some of their significant findings while using the operating system.

iOS 9 Increases Battery Power

Battery life is an annoying issue users must contend with no matter the mobile device.

Apple has taken steps toward improving battery life with iOS 9. If you place your iPhone face down on a table, the smartphone not light up with notifications because its sensors know it isn't face up. Apple also cut apps across the operating system for more efficiency and less battery drain. There is also a low-power mode, which can be activated to shut down animated wallpapers and other power hogging effects.

Apple consumers can expect an extra hour of battery life with iOS 9, according to the company.

iOS 9 News App

Apple has trashed the Newsstand app and replaced it with the News app for iOS 9. The News app invites you to add your favorite topics or publications, and, like Apple's new Music app, it creates lists of recommendations based on your preferences.

Smarter Siri with iOS 9

Apple has reportedly improved Siri, the virtual assistant that understands voice commands, by expanding its ability to communicate in iOS 9. Siri can now better understand you by using the context of your data, according to The New York Times.

Siri is now integrated into the device's search bar. Swipe to the left on the home screen to bring up the search bar. If you prefer typing commands instead of using voice, you can type in the search bar to bring up the same results.

You can now ask Siri to search for photos based on the date and location, or the album name, such as, "Show me New York City photos taken in June."

iOS 9 Offers Multitasking for iPads

iPad owners will be the Apple customers most affected by iOS 9. The operating system's added iPad features will make the tablet perform more like a personal computer.

The audience at Wednesday's Apple event saw the iOS 9 multitasking feature in action on the big screen as Word and Excel were used side by side. Apple demonstrated how content can be copied and pasted from one window into the other.

You can browse the web with the Safari app and swipe to the left from the right side of the screen to choose from a list of other apps; the second app takes up a portion of the right side of the screen.

You can also run another app while watching a video. A simple tap of a button shrinks the video and allows it to be moved to any screen corner.

These features are available only on the more powerful iPad models, like the iPad Air 2 and new iPad Pro.

BGR reports that consumers with an iPhone 4s or later model, an iPad 2 or later, or a fifth-gen iPod touch or later will be able to download iOS 9 over-the-air, or by plugging your device into a PC or Mac to get it through iTunes on Sept. 16.