Each of those variations uses the same file format, each year.

Now, when speaking of Revit versions here, we are only discussing the Revit version number or the year, not the variation of Revit, such as the commercial, or educational version, or the AEC collection, or Revit LT. If you do, the person with the more recent version of Revit will be able to open the older files just fine, but if they save them, there will be no way to re-save them back to the older version, making it impossible, for the person using the older release of the software, to access those files moving forward. It is not advisable to attempt to work with users on different Revit versions. Therefore, it is very important that you know which version of Revit you are using, and that anyone you wish to share Revit files with is using the same version as you. In other words, Revit is not backward compatible. The critical thing to understand here is that once you upgrade to a new release of Revit, you cannot save files backward. Each major release of Revit introduces a new file format. Each major release is enumerated with the year, like 2022 or 2023, with smaller releases receiving a point designation, such as 2023.1 or. Like most products in the Autodesk portfolio, Revit has a major new release annually with smaller feature releases being made available to customers on subscription throughout the year.

Revit 2023 release date