This fall, Apple will release a number of big software updates, including watchOS 3, tvOS, macOS 10.12 Sierra, and iOS 10. While all of the updates offer something exciting, it was iOS that really stole the show, introducing improved Photos, Maps, and Messages, the latter of which is looking a lot like Facebook Messenger. So, you’re probably wondering what devices will be compatible with iOS 10 when it becomes available. Wonder no more.

On Apple’s website, a chart reveals which devices will support Apple’s upcoming update. Many of them you’d expect to be on there: iPhone 6s, iPhone 6s Plus, iPad Pro (12.9 and 9.7), along with the iPad mini 4. However, despite being compatible with over 20 iOS devices, some hardware is getting left behind.

The iPhone 4S, for example, which came out in October 2011, is not on the list; anything before that in the iPhone camp isn’t supported. It’s a little better on the iPad side, however, going back as far as the iPad 2. But, anything beyond that and you’re out of luck.

You can check out the full chart in the gallery above. Apple is typically pretty good about supporting older generation devices, and it’s the same story with the upcoming release of iOS 10. However, some iPhone owners will be disappointed to find out that it might be time to upgrade their device. If not for all the new iMessage features, at least for the ability to delete stock apps.