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# iOS 16.1 Release Notes

Update your apps to use new features, and test your apps against API changes.

## Overview

The iOS 16.1 SDK provides support to develop apps for iPhone and iPad running iOS 16.1. The SDK comes bundled with Xcode 14.1 RC, available from [Beta Software Downloads](https://developer.apple.com/download/). For information on the compatibility requirements for Xcode 14.1, see <doc://com.apple.documentation/documentation/Xcode-Release-Notes/xcode-14_1-release-notes>.

### Home

#### Known issues

- You might receive an alert to turn on Wi-Fi when pairing a Matter accessory. (98460235)
  
  **Workaround:** Ensure your device is connected to your Wi-Fi network.
- Adjusting the color or color temperature might result in an unexpected color set on a Matter accessory. (98578966)
- Accessory details might not open if a Matter accessory is unreachable. (99232316)
- The device that initiates the pairing needs to use the same iCloud account as the home hub. Only the owner of a home, not an invited user, can pair Matter accessories. (76012945)

### Memory Allocation

#### Known Issues

- The system memory allocator `free` operation zeroes out all deallocated blocks in iOS 16.1 beta or later. Invalid accesses to free memory might result in new crashes or corruption, including:
  - Read-after-free bugs that previously observed the old contents of a block may now observe zeroes instead
  - Write-after-free bugs may now cause subsequent calls to `calloc` to return non-zero memory
  
  To debug these issues, use Address Sanitizer and Guard Malloc (see `libgmalloc(3)`). (97449075)

### StoreKit

#### Resolved Issues

- Fixed an issue where restoring transactions wouldn’t prompt for authentication or restore any transactions if there was no App Store account signed in. (99506258)

- Fixed an issue where purchasing or restoring in-app transactions with hosted content would block new purchases or restores from processing. (100117681)

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