Limited iOS 9 Update
Do not expect all iOS 9 updates to be created equal. While the iPhone 4s iOS 9 beta has confirmed a number of key features for the aging former flagship, we don't expect it to get everything that iOS 9 has to offer.
New iPhones almost always come with a unique iOS feature set and the iPhone 6s and iPhone 6s Plus probably won't be any different. Apple's new iPhone models are expected to come with iOS 9 features that tie into their new Force Touch display technology. The iPhone 4s doesn't have Force Touch and it won't get the feature in the future.
We do expect the iPhone 4s' iOS 9 update to come with a hefty number of changes but we just wouldn't expect it to get everything. Expect Apple to confirm the details on or around September 9th.
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