Launch into Lightning Experience Apps with the Mobile App Launcher
Where: This change applies to the new Salesforce mobile app for iOS and Android in all editions, except Essentials and Database.com.
When: The new Salesforce mobile app is available the week of October 14, 2019.
Who: Available to users with the New Salesforce Mobile App user permission.
Why: Previously, to use all the cool features that are available in Lightning apps, you needed to be on a desktop computer. Now you can access Lightning apps from anywhere.