...as far as I'm aware, other than by direct arrangement with the club for individual special circumstances such as this one reported by the BBC today

I can't see BMD tours being openly available until the stadium is ready in August, however (based on comments made when we did the GP tour a few weeks ago) I suspect that Goodison tours might keep going for a while, so don't despair if you were hoping to do the GP tour and haven't managed to book one yet.