I found the wording of the announcement a little confusing, but I'm eager to see more explanation for the following sentence in the announcement.
"Over the coming weeks, we will provide more detailed information, including easy to follow, step-by-step instructions on how you can keep using your OBi and your current phone number to keep your home phone bill extremely low, yet retain the power and flexibility that comes from using the OBi and your choice of services – even Google Voice."
It's my hope that there will be a low cost way to both keep using my OBi devices and also keep my Google Voice phone numbers, contact lists, groups and settings.
How ever it works out after May 15th. 2014, I can't complain, I've have used Google Voice including 'Free' Long distance for several hundreds of hours of "FREE" service making my purchase of OBi devices well worth the investment.