The Xbox Wire announcement page has been updated with the following:

Editor’s Note: We have updated the post above to clarify that a copy of the game is not included in the State of Decay 2 Collector’s Edition
Original Story:

Earlier this month, we started learning quite a bit more information regarding Undead Lab’s upcoming zombie survival title, State of Decay 2Two versions of the game, the Standard and Ultimate Editions, have already been unveiled, priced at $29.99 and $49.99 USD respectively. Now, a third version of the game has been revealed, the State of Decay 2 Collector’s Edition.

Everything included exclusively in the State of Decay 2 Collector’s Edition:
  • Zombie mask
  • Steelbook case
  • Human brain steelbook stand
  • USB (Severed) Thumb Drive
  • Iron-on patch

The State of Decay 2 Collector’s Edition will cost $69.99 USD. Here’s a picture of everything included:

So whether you choose to play State of Decay 2 through Game Pass, or you’re purchasing the Standard, Ultimate or Collector’s Edition, you’ve got plenty of options available. State of Decay releases on May 22nd, 2018, or four days early if you get the Ultimate Edition. As an Xbox Play Anywhere title, it’s available on Xbox One and Windows 10.