2021 April Fools

A list of Blizzard and Warcraft-related 2021 April Fools.
==Official==
*World of Warcraft: Patch 9.0.5.0.5
==Community==
;Warcraft related
*Wowhead: Encrypted 9.0.9 PTR Build 38241: Redeemed Sylvanas, Maw Covenant, Anduin Horse Mount, Lich King Pepe
*Kruithne on Twitter: The Bengal Tiger Secret Mount
*handclaw on Twitter: World of Warcraft: Undermine
*Raider.IO: Patch 9.1 Seasonal Affix: Imprisoned
*MethixYo on r/wow: TBC Classic Store Mounts Revealed
;Diablo related
*Carbot's Diablo 2 Cartooned announcement