Last August, a leak had put forward the date of December 8 for the launch of Diablo 4 pre-orders. Today, we learn that Blizzard has launched a survey of certain Diablo players, in particular to find out what bonuses they would like to obtain during pre-orders.
On the screenshots below, published by Wowheadwe see that the studio is considering bundles in which we might find certain bonuses such as early access to the game. This would allow us to play Diablo 4 in preview, a few days before its official release.
There are also other more classic rewards, such as wings and an appearance for your in-game character, as well as a mount that would be exclusively accessible in certain versions. It might also be that Blizzard offers bundles with Diablo 2 and/or Diablo 3. The opportunity to discover legendary titles at a lower cost.