The latest, shiniest, and most futuristic upgrade to the Ethereum blockchain was launched at the end of 2020. The transition to the new version is being phased in and should be completed in the summer of 2022.
The Ethereum 2.0 protocol will be a major upgrade for the Ethereum network.
There are many changes that are coming to Ethereum, with some of these including account abstraction, transaction privacy (the ability to hide smart contract data), and sharding (ability to partition system resources).
Ethereum 2.0 plans on moving from POW (proof-of-work) consensus algorithm to POS (proof-of-stake), which would make transactions much quicker and also require less electricity usage.