Ethereum co-founder Vitalik Buterin has described “Lean Ethereum” as the network’s next major protocol era, saying it is not a single upgrade but a collection of changes expected to reach Ethereum over the next three to four years. The comments came after Ethereum researchers met in Berlin to continue discussions on the protocol’s long-term direction. Buterin pointed to the updated Ethereum “strawmap,” a public draft roadmap that maps proposed upgrades across the consensus, data and execution layers.
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