The Star Wars Saga: The Original Trilogies Trilogy the Collector’s Edition Set (with space left open for VIII and IX in the box).
Haha yeah they did that for the Jurassic Park Blu ray set
And the 2012 Bond collection IIRC (left a space for Skyfall).
And again for a 2015 set (the same one but it had Skyfall and a new empty space for SPECTRE). That’s the set I have.