After thorough testing with Finale v26.3 and v27 on Apple's M1 silicon chip based computers, we have not found any issues that will prevent the program from working as expected. Finale is not currently Apple Silicon native though and must be used through Apple's Rosetta 2 technology.
We understand that Apple's technology is moving towards becoming Silicon only and that all software, including ours, will need to run native on these processors, without the use of Rosetta 2, in the near future. Although we do not have a timeline to share yet, we are currently in the process of making Finale and Garritan products Apple Silicon Native and hope to provide these versions soon.
Please follow this article to receive more information on this topic as it becomes available.
If you rely on third-party plug-ins and hardware while using Finale, it is recommended to check with the manufacturers of these products for their specific guidelines regarding macOS 11 and Apple Silicon M1.