Apple Seeds Second Betas of iOS 16.6 and iPadOS 16.6 to Developers

Apple today seeded the second betas of upcoming iOS 16.6 and iPadOS 16.6 updates to developers for testing purposes, with the software coming two weeks after the release of the first betas.

iOS 16
Registered developers can opt in to the betas by opening up the Settings app, going to Software Update, tapping on the “Beta Updates” option and toggling on the iOS 16 Developer Beta. Note that an Apple ID associated with a developer account is required to download and install the beta.

iOS 16.6 and iPadOS 16.6 lay the groundwork for iMessage Contact Key Verification. It is meant to let Apple device owners verify that they are messaging with the people they intend to message rather than a malicious entity that has intercepted a message or is eavesdropping on a conversation.

The feature is designed for Apple users who are facing “extraordinary digital threats.” Apple intends for iMessage Contact Key Verification to be used by journalists, human rights activists, government officials, and others who are in danger of malicious digital attacks from state-sponsored attackers or other malicious actors.

Apple said that iMessage Contact Key Verification would be available on the iPhone and other Apple devices at some point in 2023, and it is one of the last features we are expecting to see in iOS 16. In the first beta, hints of iMessage Contact Key were available, but the option was not fully enabled.

Related Forum: iOS 16

Popular Stories

iOS 26

iOS 26.1 Coming Soon: New Features for Your iPhone and Release Date

Monday October 27, 2025 7:55 am PDT by
The upcoming iOS 26.1 update includes a handful of new features and changes for iPhones, including a toggle for changing the appearance of the Liquid Glass design, "slide to stop" for alarms in the Clock app, and more. Below, we outline key details about iOS 26.1. Release Date Given that Apple has yet to seed an iOS 26.1 Release Candidate, which is typically the final beta version, the...
iOS 26

6 New Things Your iPhone Can Do in iOS 26.1

Wednesday October 29, 2025 4:22 am PDT by
Apple is about to drop iOS 26.1, the first major point release since iOS 26 was rolled out in September, and there are at least six notable changes and improvements to look forward to. We've rounded them up below. Apple has already provided developers and public beta testers with the release candidate version of iOS 26.1, which means Apple will likely roll out the update to all compatible...
maxresdefault

Apple TV 4K Could Still Launch Before 2025 Ends: All the Rumored Features

Monday October 27, 2025 4:51 pm PDT by
Apple is designing an updated version of the Apple TV 4K, and rumors suggest that it could come out sometime in the next couple of months. We're not expecting a major overhaul with design changes, but even a simple chip upgrade will bring major improvements to Apple's set-top box. Subscribe to the MacRumors YouTube channel for more videos. We've rounded up all the latest Apple TV rumors. ...
iOS 26

Apple Seeds iOS 26.1, iPadOS 26.1, and macOS Tahoe 26.1 Release Candidates

Tuesday October 28, 2025 1:07 pm PDT by
Apple today provided developers and public beta testers with the release candidate versions of upcoming iOS 26.1, iPadOS 26.1, macOS Tahoe 26.1, tvOS 26.1, watchOS 26.1, and visionOS 26.1 updates for testing purposes. The RCs betas come a week after Apple released the fourth betas. The new betas can be downloaded from the Settings app on a compatible device by going to General > Software...
M6 MacBook Pro Feature 1

M6 MacBook Pro: Release Date, Pricing, and What to Expect

Monday October 27, 2025 9:15 am PDT by
Apple this month refreshed the 14-inch MacBook Pro base model with its new M5 chip, and higher-end 14-inch and 16-inch MacBook Pro models with M5 Pro and M5 Max chips are expected to follow in early 2026. However, these machines will represent the final update to the current design, with Apple reportedly developing a completely new version of the MacBook Pro packed with next-generation hardware...
iPhone 17 Pro Cosmic Orange

8 Reasons to Wait for Next Year's iPhone 18 Pro

Thursday October 30, 2025 4:42 am PDT by
Apple's iPhone development roadmap runs several years into the future and the company is continually working with suppliers on several successive iPhone models at the same time, which is why we often get rumored features months ahead of launch. The iPhone 18 series is no different, and we already have a good idea of what to expect for the iPhone 18 Pro and iPhone 18 Pro Max. One thing worth...
macos tahoe

Here Are Apple's Release Notes for macOS Tahoe 26.1

Tuesday October 28, 2025 1:21 pm PDT by
Apple today provided developers and public beta testers with the release candidate version of macOS Tahoe 26.1, which means the update will likely see a public launch next week. The release candidate includes notes on what's in the update, so we have a full picture of the new features that Apple has included. macOS Tahoe 26.1 adds AutoMix support over AirPlay, improved FaceTime audio...
ipad mini 7 feature blue

OLED iPad Mini: Release Date, Pricing, and What to Expect

Wednesday October 29, 2025 7:13 am PDT by
Rumors are stoking excitement for the next-generation iPad mini that Apple is reportedly close to launching. So what should we expect from the successor to the iPad mini 7 that Apple released over a year ago? Read on to find out. Processor and Performance Apple is working on a next-generation version of the iPad mini (codename J510/J511) that features the A19 Pro chip, according to...
iPhone Car Key Kia

Another Vehicle Brand Gaining iPhone Car Keys Support

Tuesday October 28, 2025 5:27 am PDT by
Apple is preparing to bring support for its digital car key feature to Jetour vehicles, according to evidence uncovered on Apple's backend by MacRumors contributor Aaron Perris. Introduced in 2022, Car Keys allows an iPhone or Apple Watch to unlock a vehicle through the Wallet app. A digital version of a car key is stored in Wallet, and unlocking can be done by holding an Apple Watch or...

Top Rated Comments

Realityck Avatar
32 months ago
Released today
iOS 16.6 beta 2 (20G5037d) - May 31, 2023
iPadOS 16.6 beta 2 (20G5037d) - May 31, 2023
macOS 13.5 beta 2 (22G5038d) - May 31, 2023
watchOS 9.6 beta 2 (20U5538d) - May 31, 2023
tvOS 16.6 beta 2 (20M5538d) - May 31, 2023
Score: 6 Votes (Like | Disagree)
Realityck Avatar
32 months ago
Availability of iOS/IPadOS 16.6b2 is well timed, gives the PB to be out tomorrow likely still an additional day before everything goes WWDC.
Score: 6 Votes (Like | Disagree)
Realityck Avatar
32 months ago
[HEADING=2]iOS & iPadOS 16.6 Beta 2 Release Notes[/HEADING]
[HEADING=3]Known Issues[/HEADING]

* Pairing a first Matter accessory in a new Apple Home will fail when paired by selecting an accessory from the nearby accessories list. (109905770)
Workaround: Pair a first Matter accessory by scanning the QR code on the Add Accessory card in a new Apple Home. Subsequent matter accessories can be paired using the nearby accessories list.
Score: 6 Votes (Like | Disagree)
3166792 Avatar
32 months ago

Can we just get Airplay 2, please...
Came out almost exactly 5 years ago.
Score: 4 Votes (Like | Disagree)
Fatwalrus93 Avatar
32 months ago

The current 16.x releases are one to two days after the dev release, unless there is something preventing seeding. If you mean to ask about WWDC next IOS 17 announcements, then the public beta recipients won't see any seeding until almost July or a bit afterwards. (usually beta 3 by then) Then the same delay would for apply for incremental PB betas some time later from dev seeds as stated first sentence.
Thank you!
Score: 2 Votes (Like | Disagree)
Realityck Avatar
32 months ago

How long does it usually take for a new iOS iteration to go from announced to being able to download the beta version?
The current 16.x releases are one to two days after the dev release, unless there is something preventing seeding. If you mean to ask about WWDC next IOS 17 announcements, then the public beta recipients won't see any seeding until almost July or a bit afterwards. (usually beta 3 by then) Then the same delay would for apply for incremental PB betas some time later from dev seeds as stated first sentence.
Score: 1 Votes (Like | Disagree)