Hello to everyone,

I took my chance to ask HarperCollins directly about the future of Deluxe Editions and I got an answer :)
The next Deluxe Edition is up to come in March 2020 and will be a new edition of the 1975's Sir Gawain and the green knight - Pear and Sir Orfeo with the original preface of Christopher Tolkien plus an essay of 1953 by JRR Tolkien (it's unclear what it is since I was not given any details about it). The person from H&C also told me about "added content to be revealed later".

This is great news, and I'm really looking forward to this new Deluxe Edition, hoping the first print to be printed by either Clays or IEGO :)