Not a website, but another forum. I'm the moderator and I started this list in early Mar and keep it updated weekly. The most complete list you'll find. All titles have been verified by the different labels. In addition, you find a complete list of upcoming releases sorted by date rather than title. Easier to track that way. Just click on either the "Upcoming DVD-A Releases" or the "Current DVD-A Titles" threads. Hope this helps. Link Removed
Sorry, the SACD Moderator doesn't provide one. Here's the lists I use which will give you most of what's available. The first link is for SACD's on labels other than Sony. The second link is for Sony titles. Link Removed Sony SACD List
The fist webpage takes a bit of time to load completely, so be patient. Hope these help.