Mainstream DVD-A production ceaced a couple of years ago, but about once a year a special edition of some classic album comes out with a DVD-A side. It's rare, but still happens. (Fortunately, any plant that can stamp a DVD video and also stamp a DVD-A.)
I was never into SACD, but a friend of mine who was tells me that the last SACD stamping plant in the USofA was closed down last year. You may still be able to get some from Europe or Asia, but I wouldn't count on it.
It's best to consider both formats dead, and be delighted if anything new ever shows up.