Hi Sven, 

On behalf of Instructure, we have no plans to discontinue access to Canvas Free-for-Teacher. We firmly believe in providing a space for educators and students around the world to teach and learn. Not only are there no plans to do so, but we are working on improving the experience for all. For example, we have recently refreshed Free-for-Teacher Users Hub here in the Community here for a better experience for educators to share ideas and get assistance on their Canvas questions. We're also hoping to have some exciting new features available for our FFT users later this month. Stay tuned! Anyway, hope this helps. 

Kevin