Apple Seeds Release Candidate Version macOS Monterey 12.3 Beta to Developers and Public Beta Testers

For macOS 12.3 RC (21E230) - March 8, 2022
[SPOILER="macOS Monterey 12.3 Release Notes"]
Apple Pay
New Features

* Developers can express payment network preference in PKPaymentRequest ('https://developer.apple.com/documentation/passkit/pkpaymentrequest'). Network preference is determined by the order of supportedNetworks ('https://developer.apple.com/documentation/passkit/pkpaymentrequest/1619329-supportednetworks'). This won’t override the user’s default card selection, but if the card is multi-SSD, then the network preference order determines which SSD is selected. (80827905)

Authentication
New Features

* Support is added to the passkey technology preview, enabling signing in to passkey-compatible websites and apps on Mac and iPad using an iPhone with a saved passkey. (87998252)

Game Controller
New Features

* Support is now available for new DualSense adaptive trigger firmware features available via GCDualSenseAdaptiveTrigger ('https://developer.apple.com/documentation/gamecontroller/gcdualsenseadaptivetrigger'). (87433163)

iWork
Known Issues

* Collaboration scenarios might not work when the user configures the system to a right-to-left language. (89078453)
Workaround: Use iWork.com ('https://developer.apple.com/documentation/iWork.com') to collaborate in Safari using a right-to-left language.

Kernel
Deprecations

* The kernel extensions used by Dropbox Desktop Application and Microsoft OneDrive are no longer available. Both service providers have replacements for this functionality; Dropbox is currently in beta. (85890896)

libc++
New Features

* The following new C++20 and C++23 features are now implemented:

* C++20 library concepts defined in <concepts>.
* constexpr for std::swap() and swap-related functions.
* Miscellaneous constexpr-ification in the library.
* std::atomic now default initializes as expected.
* A .contains() method for associative containers.
* Added std::bind_front(). (88131816)


Deprecations

* Some extensions in std::tuple were removed to fix bugs caused by those extensions:

* Tuples can no longer be constructed from fewer than the number of elements in the tuple. Previously, elements that weren’t specified were default-constructed; now this is a compiler error.
* A tuple can no longer be constructed from an array.
* The std::result_of and std::is_literal_type type traits are no longer available in C++20 mode, as specified in the Standard.


Python
Deprecations

* Python 2.7 was removed from macOS in this update. Developers should use Python 3 or an alternative language instead. (39795874)

StoreKit
New Features

* SKTestSession ('https://developer.apple.com/documentation/storekittest/sktestsession') has three new methods to simulate a subscription requiring price increase consent, simulate consenting to a pending price increase, and simulate declining a price increase in automated tests. (84556183)
* SKTestSession has two new Boolean properties to simulate billing retry and grace period in automated tests. You can identify and simulate the resolution of billing retry issues using the same APIs as interrupted purchases. (83956205)
* Users can now test the billing retry and grace period states using StoreKit Testing in Xcode. Use Xcode 13.3 or later to enable billing retry testing and toggle whether the app offers a grace period. Use isInBillingRetry ('https://developer.apple.com/documentation/storekit/product/subscriptioninfo/renewalinfo/3749502-isinbillingretry') and gracePeriodExpirationDate ('https://developer.apple.com/documentation/storekit/product/subscriptioninfo/renewalinfo/3749500-graceperiodexpirationdate') to handle these states in the app. (83938270)
* StoreKit error types now conform to LocalizedError ('https://developer.apple.com/documentation/foundation/localizederror'). (78735204)
* Users can test subscription price increase behavior using StoreKit Testing in Xcode. Use Xcode 13.3 or later to set a price increase, then use paymentQueueShouldShowPriceConsent(_:) ('https://developer.apple.com/documentation/storekit/skpaymentqueuedelegate/3521328-paymentqueueshouldshowpriceconse'), showPriceConsentIfNeeded() ('https://developer.apple.com/documentation/storekit/skpaymentqueue/3521327-showpriceconsentifneeded'), and priceIncreaseStatus ('https://developer.apple.com/documentation/storekit/product/subscriptioninfo/renewalinfo/3822292-priceincreasestatus') in the app. (58770817)
* Some types in StoreKit now have a localizedDescription read-only Stringinstance property. This property can be used to get a human-readable description of the value, localized for the device’s current locale. These types include: Product.ProductType ('https://developer.apple.com/documentation/storekit/product/producttype'), Product.SubscriptionInfo.RenewalState ('https://developer.apple.com/documentation/storekit/product/subscriptioninfo/renewalstate'), expirationReason ('https://developer.apple.com/documentation/storekit/product/subscriptioninfo/renewalinfo/3749499-expirationreason'), priceIncreaseStatus ('https://developer.apple.com/documentation/storekit/product/subscriptioninfo/renewalinfo/3822292-priceincreasestatus'), Transaction.OfferType ('https://developer.apple.com/documentation/storekit/transaction/offertype'), Product.SubscriptionOffer.OfferType ('https://developer.apple.com/documentation/storekit/product/subscriptionoffer/offertype'), Product.SubscriptionOffer.PaymentMode ('https://developer.apple.com/documentation/storekit/product/subscriptionoffer/paymentmode'), Product.SubscriptionPeriod.Unit ('https://developer.apple.com/documentation/storekit/product/subscriptionperiod/unit'), Transaction.RevocationReason ('https://developer.apple.com/documentation/storekit/transaction/revocationreason'), and Transaction.OwnershipType ('https://developer.apple.com/documentation/storekit/transaction/ownershiptype'). (78735060)

Universal Control
Known Issues

* Drag-and-drop scenarios might not work for some file types and apps. (88106322)
* Some third-party keyboards and mice might encounter issues when using additional functionality, like scroll wheels. (88106362)

WebKit
Deprecations

* Support for inline viewing of PostScript files is no longer available. (88172449)

[/SPOILER]

Wow - only 8 comments after almost 24 hours?!? I figured there would be lots of reporting on bugs finally fixed/still not fixed, etc.

I'm not even exited for Universal Control, I'm just glad that 12.3 fixes the artifacts on the sides of transparent windows such as control centre when running it on a Mac with certain Intel HD graphics chips...

6800/6900XT GPU performance issues persist. :(

I thought I was going crazy and it was still only me.

It's definitely related to APFS - I have one HPFS+ volume that mounts instantly. Something major changed in how they handle the file system. It wouldn't be bad if it would mount them all at the same time, but it's sequential, so is a major PITA. Like booting circa 2002.

And it *STILL* hasn't fixed the mounting delays for external USB drives. 30-60 second per drive.