I decided to actually use the Yellow that I got when they came out (and take the docker off the NAS that I'd been using). However, it gets stuck during the setup - it does bring up the web page to the 'Preparing Home Assistant' but stays there. Hardware version is 1.2. This is not the kit version.
The logs end up with:
6-06-21 21:14:26 ERROR (SyncWorker_2) [supervisor.docker.interface] Can't install ghcr.io/home-assistant/yellow-homeassistant:2026.6.4: 404 Client Error for http+docker://localhost/v1.41/images/ghcr.io/home-assistant/yellow-homeassistant:2026.6.4/json: Not Found ("no such image: ghcr.io/home-assistant/yellow-homeassistant:2026.6.4: No such image: ghcr.io/home-assistant/yellow-homeassistant:2026.6.4")
26-06-21 21:14:26 WARNING (MainThread) [supervisor.homeassistant.core] Error on Home Assistant installation. Retry in 30sec6-06-21 21:14:26 ERROR (SyncWorker_2) [supervisor.docker.interface] Can't install ghcr.io/home-assistant/yellow-homeassistant:2026.6.4: 404 Client Error for http+docker://localhost/v1.41/images/ghcr.io/home-assistant/yellow-homeassistant:2026.6.4/json: Not Found ("no such image: ghcr.io/home-assistant/yellow-homeassistant:2026.6.4: No such image: ghcr.io/home-assistant/yellow-homeassistant:2026.6.4")
26-06-21 21:14:26 WARNING (MainThread) [supervisor.homeassistant.core] Error on Home Assistant installation. Retry in 30sec