will CD-ROMS read ISO-9660 format?

[Dave Martindale]

In article <1991Feb26.205439.2704 at odin.corp.sgi.com> rogerc at wpd.sgi.com writes:
>
>The ISO 9660 file system will be supported.

Will it be supported via a utility program that knows how to read the
format (sort of like "tar")?  Or will it be supported as an honest-to-goodness
Unix filesystem type, so you can chdir into it, export the data via NFS, etc?