Destiny 2: Shadowkeep had a Physical Collector's Edition released through the Bungie Store for Shadowkeep release day back in October. The back of the slipcase packaging that contained the box inside, included an Acronym:

WDIL

This must be documented, so that we never forget, where we've been, where we are at, and where we are going. Let's add the acronym to the greater collection

Destiny Timeline:

Acronym         Game                            Solution
YWNBTGASTTOOOC  Destiny                         (?)
TITBOCIEBAPO    Destiny: The Taken King
TGDOWGNOF       Destiny: The Collection (Disc)
ICDSIFD         Destiny 2
WDIL            Destiny 2: Shadowkeep

SYMSNNO         Destiny Companion Application   unconfirmed? Satisfying Your Mom Since Nineteen-Ninety-One

Any guesses?

Please let me know if I am missing anything from the list.
(I believe that the Google Stadia release for Shadowkeep was all digital only, but I cannot confirm that completely since I don't know how the distribution operated (Was it all digital email only? Or more doubtfully, could there have been a special D2:Shadowkeep DLC code slip w/acronym enclosed inside some special ChromeCast kit? Or Stadia Pro Controller? etc.))