Forum still uses HTTP rather than HTTPS

I can't predict when people will no longer be able to use HTTP. What I am observing is that Google Chrome is raising the bar continuously, e.g., by introducing concepts like "Content Security Policies" or disallowing self-signed certificates etc.

If you start with the preparations to migrate to HTTPS soon enough you won't have to worry about the time it will take and will instead be prepared for the final switch.