I can give you a prediction - or at least provide you with the information I learned about SMC.

Developers of SMC are dedicated to finish their work, they want to implement safetoken and find a way to provide data permanency of the hosted files.
There is good chance it will happen at some point in 2017, but knowing how SMC development was never ending story so far, it might be 2018 or 2019 as well.