Doomed or not, SA-CD over TOSLINK (digital optical out) was just added in the latest firmware update from Sony for the Sony PS3. This was November 8th, 2007. The 80GB still has SACD
support. In any case, if you want the whole story about compatibility of SACD on PS3 (or for
any audio format that is supported on the PS3 for that matter), you can take a look
at this webpage where all the details are put together concisely...