'Version' saves a copy of the FMP interface in-use to the same local folder, using the following naming convention:
$$prgm_prefix & "PM" & Day ( Get ( CurrentDate ) ) & "" & MonthName ( Get ( CurrentDate ) ) & "" & Year ( Get ( CurrentDate ) ) & ".fp7"
If your program IS NOT hosting interfaces via FMP Server:
You're done. Users will be prompted to download the new version when attempting to open the old.
If your program IS hosting interfaces via FMP Server:
Replace the FMP interface that's currently hosted by FMP Server with the new one. The new version will be available to users the next time they select a shared FMP interface.