RISC OS plain CDFS was always able to read DVD-ROMs as long as they are in ISO9660 format. Usually, they aren't (or use an ISO9660/UDF bridge format that CDFS can't handle), so it would have been incorrect to label RISC OS as "DVD reading capable".
If you need DVD reading capability, you don't have to wait for DVDFS/Cino either. Just buy CDROMFS and be happy.
BTW, I am very interested if the size of the DVD is less than 2 GB