diff --git a/content/updates/insider.md b/content/updates/insider.md
index dccd159..34f9d5b 100644
--- a/content/updates/insider.md
+++ b/content/updates/insider.md
@@ -1,34 +1,37 @@
 ---
 title: "Insider"
-date: "2026-04-06"
+date: "2026-05-25"
 description: "Rolling release notes for Insider (dev) builds — all _-dev._ versions map here."
 heroImage: "/images/updates/Insider.png"
 ---
 
 ## Highlights
 
-- Add visual indicator and one-click clear to filter button when filters are active (#509)
+- chore: update package version to 1.2.2 and release notes for consistency
+- feat: Open URLs in external browser using connection's browser profile (#547)
+- docs: add Inter-Tool Invocation documentation
+- feat: enhance protocol handler to support single-instance lock for stable builds only and add insider tag to About modal
+- feat: enable mock updates in development environment
+- feat: update zoom in accelerator keys and improve window menu structure
 
 ## Fixes
 
-- Improve empty state handling in sidebar tools by updating hint display (#516)
-- Tool detail page icon not adapting to dark/light theme (#510)
-- Dependencies Fixed: bump @xmldom/xmldom (#514)
-- Dependencies Fixed: bump lodash in the npmandyarn group across 1 directory (#513)
-- Dependencies Fixed: bump handlebars (#512)
-- Pre-filter marketplace to "new tools only" when clicking the homepage notification banner (#511)
+- docs: fix markdown escaping in parameter table
+- fix: avoid full-url lowercase in mailto scheme checks
+- fix: improve parse-failure log message with scheme context (no PII)
+- fix: correct zoom-in accelerator and re-fit BrowserView bounds after zoom
 
 ## Developer & Build
 
-- Version: 1.2.2-dev.20260406
+- Version: 1.2.2-dev.20260525
 - Branch: dev
-- Commits: 4 in the last 24 hours
-- Build Date: 24016880086
+- Commits: 2 in the last 24 hours
+- Build Date: 26379277340
 
 ## Notes
 
 - No manual migration needed; existing settings and connections continue to work.
-- This page currently reflects Insider build `v1.2.2-dev.20260406` (and newer).
+- This page currently reflects Insider build `v1.2.2-dev.20260525` (and newer).
 
 ## Getting an Insider build
 
diff --git a/content/updates/v1_2_2.md b/content/updates/v1_2_2.md
new file mode 100644
index 0000000..f8173e5
--- /dev/null
+++ b/content/updates/v1_2_2.md
@@ -0,0 +1,56 @@
+---
+title: "v1.2.2"
+date: "2026-05-25"
+description: "Open external URLs using the active connection's browser profile for consistent session isolation"
+heroImage: "/images/updates/v1_2_2.png"
+---
+
+## Highlights
+
+- Open external URLs using the active connection's browser profile for consistent session isolation
+- Keep the app accessible on macOS with a system tray icon when the window is closed
+- Sync zoom level between the main window and all open tool BrowserViews
+- Allow tools to open mailto: links with explicit user consent and URL validation
+- Improve protocol handler behavior for stable builds (single-instance lock and safer registration rules)
+- Make marketplace filtering clearer with an active-filter indicator and one-click clear
+- Improve tool update availability visibility with a clearer text-based indicator
+- Zoom: correct zoom-in accelerator keys and re-fit BrowserView bounds after zooming
+- Links: avoid lowercasing full URLs during mailto: scheme checks
+- Links: improve parse-failure logging with scheme context while avoiding PII
+- Tools sidebar: improve empty-state hint behavior for better guidance
+- URLs: add support for URLs ending in mcas.ms where applicable
+- macOS: ensure tray Quit fully exits the app (track isQuitting correctly)
+- toolboxAPI: remove deprecated loading screen API and associated handlers
+- pptb-validate: validate pptb.config.json invocation with semver enforcement
+- Types: rename PptbConfig → PPTBConfig and validatePptbConfig → validatePPTBConfig for consistent casing
+- CI/CD: separate stable vs insider release channels (including channel-specific icons)
+- Windows packaging: sign app binaries before packaging into installers
+- Workflows: tighten merge automation with explicit permissions and concurrency
+- Windows: Power-Platform-ToolBox-1.2.2-Setup.exe
+- macOS: Power-Platform-ToolBox-1.2.2.dmg (drag to Applications)
+- Linux: Power-Platform-ToolBox-1.2.2.AppImage (chmod +x, then run)
+- No manual migration needed; existing settings and connections continue to work.
+- Tool developers: mailto: opening may prompt for user consent; update config/type references to PPTBConfig if you used the older casing.
+
+## Fixes
+
+- UI: fix notification layering/z-index issues in the renderer
+- Marketplace: fix tool icon theming so icons adapt correctly in light/dark mode
+
+## Developer & Build
+
+- N/A
+
+## Install
+
+- Windows: `Power-Platform-ToolBox-1.2.2-arm64-win.exe`
+- macOS: `Power-Platform-ToolBox-1.2.2-arm64-mac.dmg`
+- Linux: `Power-Platform-ToolBox-1.2.2-x86_64-linux.AppImage`
+
+## Notes
+
+- No manual migration needed; existing settings and connections continue to work.
+
+## Full Changelog
+
+[v1.2.1...v1.2.2](https://github.com/PowerPlatformToolBox/desktop-app/compare/v1.2.1...v1.2.2)