about:config
browser.urlbar.groupLabels.enabled false
The preference browser.urlbar.quicksuggest.scenario has three possible values: history, offline, and online:
* history * This is the scenario when the user is not in any rollouts. Firefox Suggest suggestions are disabled.
* offline * This is the scenario for the "offline" rollout. Firefox Suggest suggestions are enabled by default. Search strings and matching keywords are not included in related telemetry. The onboarding dialog is not shown.
* online * This is the scenario for the "online" rollout. The onboarding dialog will be shown and the user must opt in to enable Firefox Suggest suggestions and related telemetry, which will include search strings and matching keywords.