
My wife woke up to her watch displaying the screen above (not my pic, stole it from the link below). Thinking it was a charging issue, she left it on the charger and checked all connections. Even the next day, the screen hasn't changed. Tried with my cable and hers with my watch, no issues. Its almost like its in a recovery mode, similar to the plug into iTunes notification screen in DFU mode on an iPhone.
Brought it to the Apple Store, they could it get it running either. Watch won't respond to reboots and never bypasses this screen. They sent it away for service, fully covered under apple care +. Anyone else ever get this screen but was able to recover? The article in the link below seems to say that the users device randomly started working again after plugging it in and removing from the charger multiple times.
http://www.cultofmac.com/398919/mysterious-snake-apple-watch-error-heres-what-it-means/