The Dynamics 365 release plan for the 2021 release wave 1 describes all new features releasing from April 2021 through September 2021.

The release contains new features across Dynamics 365 applications, including Marketing, Sales, Customer Service, Field Service, Finance, Supply Chain Management, Human Resources, Commerce, Fraud Protection, Business Central, Customer Insights, and Customer Voice.

Here the targeted release schedule included in the Release 2021 Wave 1.