the official package is built for macOS versions supported by github runners (arm64/macOS >= 14.0, x86_64/macOS >= 15.0) so here are inofficial builds with target release 10.15 and 11.3 and later:
darktable-5.6.0_arm64.dmg (macOS >= 11.3)
SHA2-256: a4e6f39cefe53bdbb3efb814903225e6db910f4b587f0ac406045ecdb492af01
darktable-5.6.0_x86_64.dmg (macOS >= 10.15)
SHA2-256: 8e1c39f40e2eaf95e3932b2028e34018695d4c42852efe034d28afee10913365
There are some restrictions for the new AI functions: For older macOS versions than 14.4 coreML isn’t available an so the AI processing will be done by CPU.
The intel build also can’t make use of coreML. The new dependency onnxruntime requires at least 10.15 - so i had to raise the deployment target.
like my development builds (current OSX Build ) these packages contains some additional lensfun data from Kameratrollet
Since 10.15 and 11.3 isn’t supported and tested by the development team (but from those using my development builds 
), don’t forget to backup first…
The packages aren’t notarized so you might run it first time via right mouseclick + open or allow execution via terminal: xattr -c <path/to/application.app>
Release notes see Release release 5.6.0 · darktable-org/darktable · GitHub