According to @wallisi, Linea upgraded to Fusaka at the same time as Ethereum, with the post referencing an official @LineaBuild status on X as the source (source: @wallisi citing @LineaBuild status). For traders, the verified synchronized timing offers a clear event timestamp to track ETH and Linea L2 activity around the upgrade, while the post provides no additional technical details or token incentives beyond the timing note (source: @wallisi).

According to @VitalikButerin, PeerDAS in Fusaka literally is sharding, allowing Ethereum to reach consensus on blocks without any single node seeing more than a tiny fraction of the data (source: Vitalik Buterin on X, Dec 3, 2025). He adds the design is robust to 51% attacks through client-side probabilistic verification (source: Vitalik Buterin on X, Dec 3, 2025). He characterizes this as a significant development for Ethereum (ETH) (source: Vitalik Buterin on X, Dec 3, 2025).