What's New in macOS 27.2 RC

What's New in macOS 27.2 RC

This release mainly addresses issues related to app development tools and testing. Users will not notice changes directly, but developers may benefit from these fixes when they update their apps.

1. Xcode crash issue resolved

   A problem that caused Xcode to crash during code completion has been fixed, which may help developers work more smoothly.

   Fixed: Xcode might crash when using code completion on macOS 27.2 beta.

   Apple's own words, from the General section of the notes

2. StoreKit testing issues fixed

   Several issues related to StoreKit testing in Xcode have been resolved, which could improve the app testing process for developers.

   Fixed: Intro offer eligibility does not reset immediately after calling SKTestSession.clearTransactions().

   Apple's own words, from the StoreKit Testing in Xcode section of the notes

3. Storefront updates issue fixed

   A problem where changes to the storefront or locale did not update correctly has been fixed, aiding developers in testing their apps.

   Fixed: Changing the storefront or locale using SKTestSession doesn’t propagate through Storefront.updates.

   Apple's own words, from the StoreKit Testing in Xcode section of the notes

4. Error dialogs during testing fixed

   An issue where failed purchases displayed error dialogs incorrectly has been resolved, which may enhance the testing experience for developers.

   Fixed: Failed purchases using SKTestSession might display error dialogs even when dialogsDisabled is set to true.

   Apple's own words, from the StoreKit Testing in Xcode section of the notes

Summarised by us from macOS 27.2 Golden Gate RC Release Notes on October 19, 2026. Each point cites the area of Apple's notes it came from, and nothing is included that Apple did not publish.

That is our plain-English reading of Apple's release notes for this build, which cover 6 areas of the system — 4 resolved issues, 4 known issues, 1 deprecations. Every point above traces back to an item Apple published; we translate the notes, we do not add to them. Apple's own wording, in full and unedited, follows below.

Those notes are written for developers, so they describe frameworks, APIs and fixed bugs rather than consumer features. That makes them the most precise record of what actually changed in this build — and the reason a fix you noticed may be listed under the framework responsible rather than under the app you saw it in.

Source: macOS 27.2 Golden Gate RC Release Notes, Apple Developer Documentation. Captured when this build was current — Apple replaces that page with each new beta.

What macOS 27.2 RC Is

macOS 27.2 RC is build 26B118, released on October 19, 2026. A release candidate is the build Apple intends to ship. Unless something serious surfaces in the days that follow, this is the software that becomes the public release — see our explainer on what that means.

It arrived 6 days after Beta 4 (26B5112a, October 13, 2026), against an average gap of about 9 days across this cycle. The build number has lost its beta suffix, which is the surest sign Apple considers the software finished.

RC Build Numbers Across Every Platform

Apple ships each beta wave across its platforms on the same day, usually with different build numbers per operating system. Here is every build we recorded in this wave, taken from Apple's own release feed rather than reposted from elsewhere.

Matching build numbers between two platforms — as iOS and iPadOS almost always have — mean they are built from the same source, which is why their betas behave identically.

How to Install macOS 27.2 RC

There is no profile to download. Enrol your Apple Account free at beta.apple.com for the public beta or developer.apple.com for the developer channel, then open System Settings → General → Software Update → Beta Updates and select the macOS 27.2 channel. The build appears in Software Update like any ordinary update.

If you are already on an earlier macOS 27.2 beta, this arrives as a normal update and no re-enrolment is needed. Our full macOS 27.2 install guide covers the process step by step, and our device pages tell you whether your exact model qualifies.

Should You Install It?

Yes, if you were ever going to. A release candidate is the lowest-risk point in the whole cycle: apps have caught up, the feature set is final, and in most cycles the RC and the public release are the same build with a different label.

Whatever you decide, make an archived backup on a computer first. A backup made on macOS 27.2 cannot be restored onto the previous release, so it is the only route back with your data intact — our backup guide explains the difference, and our honest assessment covers running a beta on the phone you depend on.

What Comes After RC

The public release is what comes next. In recent years Apple has shipped the finished macOS 27.2 about a week after the RC, often with the same build number, and this page records the date the moment it happens. If a serious problem surfaces first, a second RC arrives instead.

Our build history tracks every macOS build with its date and the gap before it, which is the clearest picture of how a cycle is progressing. The beta calendar guide explains the shape of the year.

Frequently Asked Questions