Blizzard have showcased the many features you can get with the three editions of Diablo 4. You can pre-order the game here

Diablo 4 Editions (Source)

Edition

Standard Edition

Up to four days of Early Access to Diablo IV’s launch***

Accelerated Seasonal Battle Pass Unlock in Diablo IV—includes a Premium Seasonal Battle Pass Unlock plus 20 Tier Skips and a cosmetic

Wings of the Creator Emote in Diablo IV

Hellborn Carapace Mount Armor in Diablo IV

Temptation Mount in Diablo IV

Early Access to the Open Beta*

Light Bearer Mount in Diablo IV

Inarius Wings and Inarius Murloc Pet in Diablo III**

Amalgam of Rage Mount in World of Warcraft**

Umber Winged Darkness Cosmetic Set in Diablo Immortal**

Digital copy of Diablo IV game
 

Digital Deluxe Edition

Up to four days of Early Access to Diablo IV’s launch***

Premium Seasonal Battle Pass Unlock in Diablo IV

Hellborn Carapace Mount Armor in Diablo IV

Temptation Mount in Diablo IV

Early Access to the Open Beta*

Light Bearer Mount in Diablo IV

Inarius Wings and Inarius Murloc Pet in Diablo III**

Amalgam of Rage Mount in World of Warcraft**

Umber Winged Darkness Cosmetic Set in Diablo Immortal**

Digital copy of Diablo IV game
 

Ultimate Edition

Up to four days of Early Access to Diablo IV’s launch***

Accelerated Seasonal Battle Pass Unlock in Diablo IV—includes a Premium Seasonal Battle Pass Unlock plus 20 Tier Skips and a cosmetic

Wings of the Creator Emote in Diablo IV

Hellborn Carapace Mount Armor in Diablo IV

Temptation Mount in Diablo IV

Early Access to the Open Beta*

Light Bearer Mount in Diablo IV

Inarius Wings and Inarius Murloc Pet in Diablo III**

Amalgam of Rage Mount in World of Warcraft**

Umber Winged Darkness Cosmetic Set in Diablo Immortal**

Digital copy of Diablo IV game