secrec I left android after kitkat and returned only with android 13, so I don't really know if there was any effort during that time, but now:
- google announces it's killing chromeos as it is and moving to android stack
- engineers mention "android desktop experience effort" in chromium reviews
- chromium for android desktop is a separate build with features incompatible with regular android (extensions), suggesting android desktop is a different build
- chromium spins up infrastructure to deliver arm64/x64 builds of chromium android desktop, suggesting android desktop will work on both architectures (although it's possible x64 build is for simulation only)
I think there are enough signals suggesting google (at least at the moment) committing time and money to work towards android desktop, and chromeos situation suggests we could actually see it in one form or another. Personally, I expect something to play with by android 16-17 rollout.