Microsoft Dynamics 365 Finance & Operations will have a major version 10.0 released during the next two (2) weeks. Based on the D365 F&O procedures rolled out during 2018 Q3, the D365 on-cloud customers are to be on the latest three versions, and that would be versions 10.0, 8.1.3 and 8.1.2. Customers on the prior versions like 8.0 & 7.