---
title: Xcode 26.6 RC Release Notes
framework: xcode-release-notes
role: article
role_heading: Article
path: xcode-release-notes/xcode-26_6-release-notes
---

# Xcode 26.6 RC Release Notes

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

## Overview

Overview Xcode 26.6 RC includes Swift 6.3 and SDKs for iOS 26.5, iPadOS 26.5, tvOS 26.5, macOS 26.5, and visionOS 26.5. Xcode 26.6 RC supports on-device debugging in iOS 15 and later, tvOS 15 and later, watchOS 8 and later, and visionOS. Xcode 26.6 RC requires a Mac running macOS Tahoe 26.2 or later. Coding Intelligence New Features Google Gemini is now available as a coding agent.  (171990272) The Preview Snapshot MCP tool can now render variants such as light/dark appearance, portrait/landscape orientation, and various type size overrides. It also supports specifying timelines for Widgets and toggle states for Live Activities. Taken together, this gives agents more flexibility in how they render previews in your codebase.  (172961797) Coding Intelligence settings now lets you add any ACP compliant agent.  (178294840) Resolved Issues Fixed an issue where the buttons in the Coding Tools popovers would not work.  (168956652) Fixed a crash when closing a window during an active agent turn.  (174186260) Fixed a crash during agent file operations involving non-absolute paths.  (174752919) Fixed: Buttons in the Coding Assistant’s prompt area now use more accessible labels and descriptions.  (177462284) Fixed VoiceOver getting trapped in the Coding Assistant prompt area.  (177462397) Fixed: Buttons in the Coding Assistant’s prompt area now use more accessible labels and descriptions.  (177462492) Fixed a bug that could cause Xcode to hang indefinitely when an agent asked the user a question.  (177989242) Organizer New Features Launch Time similar-app goals have been refined for improved accuracy, establishing new baselines.  (177355331)

## See Also

### Xcode 26

- [Xcode 26.5 Release Notes](xcode-release-notes/xcode-26_5-release-notes.md)
- [Xcode 26.4.1 Release Notes](xcode-release-notes/xcode-26_4_1-release-notes.md)
- [Xcode 26.4 Release Notes](xcode-release-notes/xcode-26_4-release-notes.md)
- [Xcode 26.3 Release Notes](xcode-release-notes/xcode-26_3-release-notes.md)
- [Xcode 26.2 Release Notes](xcode-release-notes/xcode-26_2-release-notes.md)
- [Xcode 26.1.1 Release Notes](xcode-release-notes/xcode-26_1-release-notes.md)
- [Xcode 26.0.1 Release Notes](xcode-release-notes/xcode-26_0_1-release-notes.md)
- [Xcode 26 Release Notes](xcode-release-notes/xcode-26-release-notes.md)