Apple on Wednesday announced a lot of new hardware. There are four new iPhone models -- theiPhone 14 ,iPhone 14 Plus ,iPhone 14 Pro , andiPhone 14 Pro Max -- along withthree new Apple Watch model s and thesecond-generation AirPods Pro . 

In addition to new hardware, Apple also quietly announced that iOS 16 and WatchOS 9 will officially roll out next week starting Monday, Sept. 12. Apple typically releases major updates around 10 am PT (1 p.m. ET), but that's not a certainty. 

Also: Everything Apple announced at its Far Out event

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The iOS 16 update brings several new features to iPhones, including the ability to edit or delete iMessages within a certain time frame, a new lock screen complete with widgets, revamped notifications on the lock screen, and improvements to the Mail app. 

There's also a new Home app for HomeKit devices, and small tweaks and changes throughout the operating system. 

Also: iPhone 14 drops the SIM card slot. Here's what that means

As for WatchOS 9, the update adds improvements to workouts and tracking heart rate zones, medicine tracking, enhanced sleep tracking and new watch faces. 

Which iPhone models will get iOS 16?

Not every iPhone model that received iOS 15 will be eligible to receive iOS 16. Here's the complete list, including the latest iPhone 14 models:

iPhone models

iPhone 14	iPhone 11
iPhone 14 Plus	iPhone 11 Pro
iPhone 14 Pro	iPhone 11 Pro Max
iPhone 14 Pro Max	iPhone XS
iPhone 13	iPhone XS Max
iPhone 13 mini	iPhone XR
iPhone 13 Pro	iPhone X
iPhone 13 Pro Max	iPhone 8
iPhone 12	iPhone 8 Plus
iPhone 12 mini	iPhone SE (2nd generation or later)
iPhone 12 Pro
iPhone 12 Pro Max

Also: iPhone 14 Pro vs iPhone 13 Pro: Is it worth the upgrade?

Which Apple Watch models will get WatchOS 9?

You'll need to have an iPhone 8 or newer that's running iOS 16 in order to install WatchOS 9 on the following Apple Watch models:

Apple Watch Models

Apple Watch Series 4
Apple Watch Series 5
Apple Watch SE
Apple Watch Series 6
Apple Watch Series 7
Apple Watch Series 8
Apple Watch Ultra

Also: Apple Watch Series 8 vs Apple Watch Series 7: Which is best for you?

Before you update on Monday, it's a good idea to do some prep work on your iPhone to ensure that the update process goes as smoothly as possible. And if you really want to be cautious, you should wait a day or three before updating to make sure there aren't any big issues that snuck through testing.

Apple

Unlock the best new features in iPhone 15, iOS 17, and Apple Watch with these tipsiOS 17: The most impactful new iPhone features are also the ones you'll notice the leastNew iPhone 15 models compared: iPhone 15 vs. Plus vs. Pro vs. Pro MaxOne subtle (but important) reason to buy the iPhone 15 Pro instead of the iPhone 14 Pro

• Unlock the best new features in iPhone 15, iOS 17, and Apple Watch with these tips
• iOS 17: The most impactful new iPhone features are also the ones you'll notice the least
• New iPhone 15 models compared: iPhone 15 vs. Plus vs. Pro vs. Pro Max
• One subtle (but important) reason to buy the iPhone 15 Pro instead of the iPhone 14 Pro