Rumors about the next-generation iPhone continue to swirl as some sources indicate the next iPhone will take features from the Apple Watch, as well as some other enhancements to messaging and more.

According to the Apple news website, the new iPhone 6S will look similar -- if not the exact same -- as the iPhone 6, but will have a variety of new internal features and updates, some felt more than seen.

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Apple's flagship Force Touch, which is used on the Apple Watch and new MacBook models, will make its way to the new iPhone, according to 9to5Mac. Force Touch allows different responses based on the amount of pressure you put instead of just a basic click.

"Force Touch is the most significant new sensing capability since Multi-Touch," Apple says on its Apple Watch website. "Force Touch uses tiny electrodes around the flexible Retina display to distinguish between a light tap and a deep press, and trigger instant access to a range of contextually specific controls."

Apple is also working on an updated keyboard for iOS 9, according to 9to5Mac, including multiple prototypes of longer keyboards with more options in portrait mode, and a new shift key so it's easier to tell when your caps lock or shift is activated.

For more minor updates, Apple's iMessage will be able to have read receipts for group chats and the ability to set read receipts on a contact-by-contact basis, according to 9to5Mac.