Seems like two of the biggest games from Blizzard, Diablo IV and Overwatch 2, are not to launch any time soon. We will have to wait more.
According to Activision Blizzard, both Diablo IV and Overwatch 2 are not planned to be released in 2021. Both Overwatch 2 and Diablo IV were announced in 2019 at BlizzCon that year. Not much information has been out since then from the officials.
Blizzard will be starting this year's BlizzCon on 19th and 20th February. Fans are expecting to see teasers, trailers, and details about both the games at the festival. This year BlizzCon is going to be done all online. Check out the BlizzCon official site to learn more about the online festival.