Does it still get updates or will it sooner or later cease to function ?
thetvdb.com are planning on discontinuing the current version of the ABI used by Infuse which is why this is required.
As @remotevisitor said, there will probably be one final update to V6 to handle the change from TVDB to TMDB for TV shows do to an API change at TVDB.
Here’s a post where this is addressed by James.
Where James says this will most likely be the last update for V6