
As a test, this morning I’ve been running SPE Expert Controller version 1.2.2, on the latest developer release of macOS 26 Beta 9 and I’m happy to report that it still appears to run just fine with no issues just as it did on Beta 2.

Testing was on a virtual Mac machine, as oppsed to real physical Mac, connected to my amplifier using a network connection and Waveshare adapter. But everything including Voiceover worked just fine.
Expert Controller continues to look just the same as it does on macOS 15 with the minor irritation that the application icon in the Dock is enclosed inside a grey box. But, hey, that’s Apple’s way of telling users an App hasn’t been updated for Liquid Glass.
Once Apple have done the full public release macOS 26 my intention is still to update Expert Controller to incorporate Liquid Glass whilst retaining backward compatibility with macOS 14 and 15. I’m not yet clear how a redesigned icon for macOS 26 will look on earlier macOS versions but, I guess, I’ll find out soon enough. Thanks Apple!
Andy