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-5.6.1_arm64.dmg (macOS >= 11.3)
SHA2-256: be448a56560110b1dc2dcc03ee2c1c61da3f9a8de137c7b23de08ff43f652d32
darktable-5.6.1_x86_64.dmg (macOS >= 10.15)
SHA2-256: bcbc98a442ddf40fd7295e584888a2bcf0440c738ad72725ef59168a8dbe8eac
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 and also preliminary support for Canon R6mIII
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 5.6.1 · darktable-org/darktable · GitHub