The release date of Doom Eternal, previously November 22, 2019, has now been pushed back to March 20, 2020.
Whilst this is obviously disappointing for PC gamers, extra time to polish a game can never hurt.
Doom Eternal was also pushed heavily as a launch title for Stadia in November 2019, so this delay will have other ramifications on the platform. However Bethesda are still going to be releasing games on Stadia from their back catalogue: Doom (2016), Rage 2, The Elder Scrolls Online, and Wolfenstein: Youngblood.
The information about the delay came in this tweet: