What I got from that TCP document is that you can use your bulbs as long as your phone is on the same Wifi network as the bulbs. Other devices, such as SmartThings and Echo will not work because they depend on being able to connect to the bulbs through the cloud, and not a direct Wifi connection.
Apparently TCP is still actively selling the bulbs with very little disclosure on what their products will no longer do. I wonder if TCP will offer any type of compensation to those who own their connected devices.
This isn't the first time things like this happen.
About two years ago, Nest bought Dropcam for $555 million. They discontinued support for the Dropcam about a year later. The Dropcam no longer works because Google (parent company of Nest) turned off the servers that the Dropcam relied on. The good news is that some owners of the Dropcam could get a free exchange to the newer Dropcam HD version if their old Dropcams were in use during the 30-day period from Dec 22, 2014 to Jan 21, 2015.
Quirky, the parent company of Wink, filed bankruptcy and sold Wink to Flextronics for a mere $15 million. That was about a year ago. So far, Wink services have not been affected. But who knows what the future may hold for Wink.
The big issue surrounding all of these cloud-dependent products is what happens when the company dissolves?