On April 21, 2020, Microsoft will be updating the names of its Office 365 subscriptions for small and medium businesses (SMBs). There are no price, feature, or business model changes to commercial subscriptions.
Office 365 Business subscriptions are becoming Microsoft 365 for business subscriptions. This includes Office 365 Business Essentials, Office 365 Business Premium, and Microsoft 365 Business.
Standalone commercial desktop client subscriptions are becoming Microsoft 365 Apps subscriptions. This includes Office 365 Business and Office 365 ProPlus.
Here is the video explaining it in more details
https://www.microsoft.com/microsoft-365/partners/videos/microsoft-365-smb-and-proplus-renaming
