It would be very convenient to standardize and always show the supported versions for each supported format in FME. E.g. looking at LandXML, somewhere in the LandXML Reader/Writer information is stated that a restricted subset of version 1.1 is supported and that additional support is planned for the future.
It would be nice to see something like this:
LandXML Reader/Writer
Latest supported versions: 1.0 (full), 1.1 (partly)