There’s an updated (April 2020) Dynamics 365 Business Central Licensing Guide.
The main change is the inclusion of the Sales and Customer Service Professional Attach licences that may be acquired and assigned to either Business Central Essentials or Premium users. Find this detailed on pages 2 and 13. As usual there’s a full Change Log on page 14.
Find this updated guide here: https://bit.ly/D365BCLGApr2020
There will be some changes to Dynamics 365 licensing from October 2019, which Microsoft covered in a couple of sessions at the Inspire partner conference. Let’s look at the most significant of these changes.
Firstly, the Finance and Operations module will be split into two modules: Finance, and Supply Chain Management. Secondly, all the current Plans (Unified Operations, Customer Engagement, and Dynamics 365) will be removed. This means that customers will buy licences for just the apps that they need. If a user does need to be licensed for multiple apps then they will buy a Base licence for the first app and an Attach licence for the second one. There’s no difference in the functionality but the Attach licences will be significantly cheaper.
If you want to dive deeper into these changes, then watch these Inspire sessions: Unified Operations Licensing (http://bit.ly/2y9oOgo) and Customer Engagement Licensing (http://bit.ly/2YnlRHZ).