Skylight (FxMS tool)

Skylight

Desktop Messages Released on Firefox

Message ID	Surface	Metrics Hide messages with fewer than 1000 impressions
MR_WELCOME_DEFAULT	Default About:Welcome Message (1st screen)	Dashboard
FAKESPOT_CALLOUT_OPTED_OUT_SURVEY Microsurvey	Feature Callout (1st screen)	Dashboard
ADDONS_STAFF_PICK_PT_2	Feature Callout (1st screen)	Dashboard
FIREFOX_VIEW_TAB_PICKUP_REMINDER	Feature Callout (1st screen)	Dashboard
PDFJS_FEATURE_TOUR_A	Feature Callout (1st screen)
PDFJS_FEATURE_TOUR_B	Feature Callout (1st screen)
FAKESPOT_CALLOUT_CLOSED_OPTED_IN_DEFAULT	Feature Callout (1st screen)	Dashboard
FAKESPOT_CALLOUT_CLOSED_NOT_OPTED_IN_DEFAULT	Feature Callout (1st screen)	Dashboard
FAKESPOT_CALLOUT_PDP_OPTED_IN_DEFAULT	Feature Callout (1st screen)	Dashboard
FAKESPOT_CALLOUT_CLOSED_NOT_OPTED_IN_AUTO_OPEN	Feature Callout (1st screen)	Dashboard
FAKESPOT_CALLOUT_PDP_NOT_OPTED_IN_REMINDER	Feature Callout (1st screen)	Dashboard
FAKESPOT_CALLOUT_DISABLED_AUTO_OPEN	Feature Callout (1st screen)	Dashboard
FAKESPOT_CALLOUT_OPTED_OUT_AUTO_OPEN	Feature Callout (1st screen)	Dashboard
CFR_COOKIEBANNER	Feature Callout (1st screen)	Dashboard
FIREFOX_VIEW_FEATURE_TOUR	Feature Callout (1st screen)	Dashboard
INFOBAR_LAUNCH_ON_LOGIN	InfoBar	Dashboard
INFOBAR_LAUNCH_ON_LOGIN_FINAL	InfoBar	Dashboard
MILESTONE_MESSAGE_87	Milestone Messages
PB_NEWTAB_FOCUS_PROMO	Private Browsing New Tab
PB_NEWTAB_KLAR_PROMO	Private Browsing New Tab
PB_NEWTAB_KLAR_PROMO_DE	Private Browsing New Tab
PB_NEWTAB_PIN_PROMO	Private Browsing New Tab
PB_NEWTAB_COOKIE_BANNERS_PROMO	Private Browsing New Tab
FX_MR_106_UPGRADE	Spotlight Modal Dialog	Dashboard
FX_100_UPGRADE	Spotlight Modal Dialog	Dashboard
FOX_DOODLE_SET_DEFAULT	Spotlight Modal Dialog	Dashboard
TAIL_FOX_SET_DEFAULT	Spotlight Modal Dialog	Dashboard
FIREFOX_VIEW_SPOTLIGHT	Spotlight Modal Dialog
SET_DEFAULT_BROWSER_GUIDANCE_NOTIFICATION_WIN10	Toast Notification
SET_DEFAULT_BROWSER_GUIDANCE_NOTIFICATION_WIN11	Toast Notification
FXA_ACCOUNTS_BADGE	Toolbar Badge
FXA_ACCOUNTS_BADGE_REVISED	Toolbar Badge

Current Desktop Message Rollouts

Total: 26

Experiment

Rollout

Firefox

Dates		Surface	Metrics	Visuals
2025/12/22 - 2026/3/22	TOU Experience 0 rollout non-US tou-experience-0-rollout-non-us
	White infobar for 2 wks, blue infobar for 2 wks, modal for up to 5 days / 5 times without interaction control	1st of Multiple Messages
2025/12/22 - 2026/3/22	TOU Experience 0 rollout US tou-experience-0-rollout-us
	White infobar for 2 wks, blue infobar for 2 wks, modal for up to 5 days / 5 times without interaction control	1st of Multiple Messages
2025/12/15 - 2026/2/23	Updated Privacy Notice Notification updated-privacy-notice-notification
	Privacy update infobar shown treatment	InfoBar	Dashboard
2025/12/9 - 2026/1/13	Account adoption callout for Bookmarks - Global Rollout account-adoption-callout-for-bookmarks-global-rollout
	Backup value prop treatment	Feature Callout (1st screen)	Dashboard
2025/12/5 - 2026/2/3	Onboarding Rollout - December 2025 onboarding-rollout-december-2025
	Bookmarks toolbar always on, fullscreen about welcome with account login screen, checklist present treatment-branch	About:Welcome Page (1st screen)	Dashboard
2025/11/25 - 2026/1/14	Windows 10 EoS Sync and Reminder Messaging Rollout windows-10-eos-sync-and-reminder-messaging-rollout
	Series of sync and reminder messages treatment-a	1st of Multiple Messages	Dashboard
2025/11/12 - 2026/5/11	Multiple Profile Switching Rollout V2 multiple-profile-switching-rollout-v2
	Multi-profile feature enabled and callouts treatment-a-multi-profiles	1st of Multiple Messages	Dashboard
2025/10/29 - 2026/10/29	Sidebar - 144.0.2 rollout sidebar-14402-rollout
	Sidebar button is added to the toolbar, sidebar is NOT visible, the callout is displayed after opening one tab rollout-treatment	Feature Callout (1st screen)	Dashboard
2025/10/17 - 2025/11/21	Taskbar Tabs Discovery Global Rollout taskbar-tabs-discovery-global-rollout
	delivery delivery	1st of Multiple Messages	Dashboard
2025/10/15 - 2025/11/12	Link Previews - All Channel Rollout With Onboarding link-previews-all-channel-rollout-with-onboarding
	Link Previews shown to users when they long press on links. long-press-preview	Feature Callout (1st screen)	Dashboard
2025/10/7 - 2025/11/4	AI Chatbot Page Summarization MVP - treatment-a-callout-badge Rollout v2 ai-chatbot-page-summarization-mvp-treatment-a-callout-badge-rollout-v2
	Callout page summarization with badging treatment-a-callout-badge	1st of Multiple Messages	Dashboard
2025/10/3 - 2025/10/4	Roll out Expanded sign-in PXI toolbar button w/callout (Signed out) roll-out-expanded-sign-in-pxi-toolbar-button-wcallout-signed-out
	Adding "Sign in" text to the FxA avatar button with Login message callout sign-in-with-call-out	Feature Callout (1st screen)	Dashboard
2025/10/1 - 2025/10/29	Account adoption callout - credit cards - treatment-c rollout account-adoption-callout-credit-cards-treatment-c-rollout
	Credit card & backup treatment-c	Feature Callout (1st screen)	Dashboard
2025/9/30 - 2025/10/1	Acct adoption callout - addresses rollout with no PXI exclusion acct-adoption-callout-addresses-rollout-with-pxi-required
	Address & Backup treatment-a	Feature Callout (1st screen)	Dashboard
2025/9/19 - 2026/9/19	Pin Frequently Used Websites - 143 - Promo Rollout, All Locales pin-frequently-used-websites-143-promo-rollout-all-locales
	Pin sites you visit the most - NO image (Treatment B) rollout-branch	Feature Callout (1st screen)	Dashboard
2025/9/16 - 2026/9/16	Pin Frequently Used Websites - EN-* Promo Rollout, no min version pin-frequently-used-websites-en-promo-rollout-no-min-version
	Pin sites you visit the most - NO image rollout-branch	Feature Callout (1st screen)	Dashboard
2025/9/15 - 2025/10/13	Account Adoption PXI Menu - Fx141-Fx142 account-adoption-pxi-menu-fx141-fx142
	Sync focused value proposition treatment-a	menu_message		Screenshots
2025/9/15 - 2025/10/13	Account Adoption PXI Menu - Rollout Fx143+ account-adoption-pxi-menu-rollout-v2
	Sync focused value proposition treatment-a	menu_message		Screenshots
2025/7/25 - 2026/7/25	Account spotlight modal - Global rollout - V3 account-spotlight-modal-global-rollout-v3
	Show the "sync" treatment from spotlight-modal-to-drive-accounts-via-backup-value-prop rollout	Spotlight Modal Dialog	Dashboard
2025/7/22 - 2025/8/19	Account Adoption Callout Passwords - Global Rollout account-adoption-callout-passwords-global-rollout
	Treatment E - Password + Backup treatment-e	Feature Callout (1st screen)	Dashboard
2025/6/26 - 2025/7/24	1-Callout Contextual Chatbot Suggestion Treatment A: Tab Switching Copy Rollout 1-callout-contextual-chatbot-suggestion-treatment-a-tab-switching-copy-rollout
	Use an AI chatbot without switching tabs treatment-a-tab-switching-copy	Feature Callout (1st screen)	Dashboard
2025/6/18 - 2026/6/18	Vertical tabs feature callout experiment v2.0 - Treatment A Rollout vertical-tabs-feature-callout-experiment-v20-treatment-a-rollout
	Overwhelmed by too many tabs value prop treatment-a	Feature Callout (1st screen)	Dashboard
2025/2/20 - 2026/2/20	Mozilla VPN in Private Browsing - Treatment D Rollout (EN only) mozilla-vpn-in-private-browsing-treatment-d-rollout-en-only
	treatment focusing on explaining what makes Mozilla VPN different treatment-d	Private Browsing New Tab		Screenshots
2025/2/4 - 2025/3/4	PDF Annotations - Highlight - Treatment B Rollout pdf-annotations-highlight-treatment-b-rollout
	Both variants - already default and not default treatment-b	1st of Multiple Messages	Dashboard
2025/1/28 - 2025/3/4	Fox Doodle Multi-Action CTA 2025 - Rollout fox-doodle-multi-action-cta-2025-rollout
	Checkbox Multi CTA variant & Fox Doodle/Tail Fox treatment-a	1st of Multiple Messages	Dashboard
2024/11/25 - 2025/11/25	Expand sidebar callout (existing profiles) sidebar-button-feature-callout-vertical-tabs-users-existing-profiles
	Feature callout for vertical tabs users who have not clicked the sidebar button control	Feature Callout (1st screen)	Dashboard

Current Desktop Message Experiments

Total: 9

Experiment

Rollout

Firefox

Dates		Surface	Metrics
2026/1/7 - 2026/2/4	Firefox Year in Review firefox-year-in-review
	no-message control control	none
	Year-in-review callout treatment-a	Feature Callout (1st screen)	Dashboard
2026/1/5 - 2026/2/9	TOU Experience 1 tou-experience-1
	No messages control	1st of Multiple Messages
	White infobar for 2 wks, blue infobar for 2 wks, modal once treatment-a	1st of Multiple Messages
2026/1/5 - 2026/2/9	TOU Experience 2 tou-experience-2
	No messages control	1st of Multiple Messages
	White infobar for 4 weeks treatment-a	1st of Multiple Messages
2025/12/22 - 2026/1/26	TOU Experience 0 non-US holdback experiment tou-experience-0-non-us-holdback-experiment
	No messages control	1st of Multiple Messages
	White infobar for 2 wks, blue infobar for 2 wks, modal for up to 5 days / 5 times without interaction treatment-a	1st of Multiple Messages
2025/12/22 - 2026/1/26	TOU Experience 0 US holdback experiment tou-experience-0-us-holdback-experiment
	No messages control	1st of Multiple Messages
	White infobar for 2 wks, blue infobar for 2 wks, modal for up to 5 days / 5 times without interaction treatment-a	1st of Multiple Messages
2025/12/18 - 2026/1/15	New Tab Automated Personalization - v3 new-tab-automated-personalization-v3
	No content personalization control	none
	Personalization enabled with local top stories re-ranking personalized-stories	newtab_message
2025/12/17 - 2026/1/14	Firefox Backup + Sync Messaging follow-ons firefox-backup-sync-messaging-follow-ons
	no-message control control	none
	Win 11 callout (sync) treatment-a	Feature Callout (1st screen)	Dashboard
	Win 11 callout (backup) treatment-b	Feature Callout (1st screen)	Dashboard
	Challenger callout (sync) treatment-c	Feature Callout (1st screen)	Dashboard
	Challenger callout (backup) treatment-d	Feature Callout (1st screen)	Dashboard
2025/12/10 - 2026/1/7	Recommended Add-Ons OS Notification Experiment recommended-add-ons-os-notification-experiment
	no-message control control	none
	treatment A - uBO treatment-a	Toast Notification
	treatment B - Collection treatment-b	Toast Notification
	treatment C - Blog post treatment-c	Toast Notification
2025/10/3 - 2026/4/4	Firefox VPN for Windows 10 Users - Alpha firefox-vpn-for-windows-10-users
	Firefox VPN (Alpha variant) is available. alpha	1st of Multiple Messages	Dashboard
	Firefox VPN is not available. control	none