FYI: Sleep is still broken even with the latest firmware release. Also, I’m not seeing any mention of sleep improvements in any of the recent releases (or commits):
https://github.com/MrChromebox/chrome-ec/branches/all
I’m not sure if the issue is the device not sleeping at all, or waking up at some point with the screen still off. I am unable to perform any further troubleshooting so I’m mentioning this for information only.
At this point, I am only hoping that others don’t end up buying either the drobit or the drallion like I did, expecting full hardware support from reading Supported Devices and Platforms | Chrultrabook Docs