I did as I do with all Marvel/Disney products since Thor Ragnarok, pre-order the 3D from Amazon.uk, even before I saw it theatrically. I intend to pursue 3D versions as long as they are being put out somewhere, thought I see fewer of these. (The latest Men in Black, and X men discs are only flat.) Those of you PO’d by not having the right 4K, or Dolby atmos can feel my pain. Not only was Endgame in IMAX, but it was in 3D as well. I hope 4K is as long lasting as people investing in it want it to be, and you are not having to order discs from Britain, Germany, or even Hong Kong as I have had to do, but beware! The home theatre industry is “a very fickle mistress”, always tossing adopters of new formats aside on a whim, and rushing to whatever else is new. It is even probably impossible for us to see the difference, but I can see 8K looming over the horizon, at least as a marketing gimmick.