It turned out that the French distributors couldn’t get the rights to release the 70mm version. That insanely expensive version, additionally, had the strangest extras: including a “signed poster,” with facsimile signatures.
Rumor had it, once upon a time, that there was going to be a silent Brazilian release of the 70mm version. Take that as you will.
Ah, that’d explain why we haven’t heard about it since the early specs for that release were announced. The edition (“Edition Prestige”) still exists, just without the ‘signed poster’ and the roadshow cut.