Most new releases are now sacd not DVD-a, particularly classical releases. There is a small smattering of BD audio releases.
On amazon DVD audio 5.1 only gets 1825 hits and many of those beyond page 2 are just cd. DVD audio gets about 60,000, but the majority of those once you get beyond page 3 are just cds. SACD gets over 8000 hits, but I'm sure in the later pages many of those are just CD as well.