One Version and continuous service updates are a new concept and customers/partners are getting used to it. There are still a lot of questions. Microsoft has put together an FAQ page that answers some of the very commonly asked questions. Here, you will find the link to this page, which you can read at your convenience and get some of the answers you might be looking for, at https://docs.microsoft.com/en-us/dynamics365/fin-ops-core/fin-ops/get-started/one-version?toc=/dynamics365/commerce/toc.json.

One of the many benefits of the One Version service update is new features. Each service update has some new features added to D365FO. Microsoft has added a new functionality, feature management, which gives customers the power to choose which feature to use as needed for the business.