Ethereum is set to undergo a scheduled upgrade at block number 13,773,000, which should take place around December 8th.
The Arrow Glacier network upgrade will delay the difficulty bomb until June 2022, which is when developers believe Ethereum will be running on Proof-of-Stake (PoS).
Arrow Glacier will give miners time to breathe as Ethereum transitions to POS
According to Tim Beiko, the chair of all core developers at the Ethereum Foundation, pushing back the Ice Age/Difficulty bomb has also been done in the Byzantium, Constantinople, and London network upgrades.
Arrow Glacier is coming
The upgrade will go live on block 13,773,000, around December 8th. Only change is pushing back the difficulty bomb… hopefully for the last time
Upgrade your nodes https://t.co/wswJHDscb3
— Tim Beiko | timbeiko.eth (@TimBeiko) November 10, 2021
The EIP-4345 Difficulty Bomb was scheduled to go off in December 2021 and exponentially raise the difficulty level for miners on the network.