decrypt.co
30 October 2025 21:41, UTC
Ethereum’s core developers have officially set a date for the network’s next major update.
The Fusaka upgrade will go live in just over a month’s time, on December 3, the developers agreed during a meeting Thursday.
The date had previously been floated for Fusaka’s implementation, but not formally finalized. On Tuesday, the update cleared its third and final testnet dress rehearsal without a hitch, paving the way for its mainnet activation.
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“The people I’ve talked to in the community are very excited about it,” Alex Stokes, the Ethereum developer who led Thursday's meeting, said of Fusaka. “It's a really big deal.”
The highly anticipated software update seeks to make Ethereum significantly more scalable by optimizing how the network collects and verifies data from layer-2 chains. It introduces several proposals focused on improving efficiency and user experience, building on advances made in earlier upgrades.
Ethereum’s 2024 Dencun upgrade introduced “blobs,” a feature that allowed for the temporary storage of layer-2 data on Ethereum transaction blocks. The innovation greatly reduced both gas fees and processing time for layer-2 transactions.
Fusaka will expand on the innovation by increasing the blob space available in each Ethereum transaction block—a move that Ethereum’s developers anticipate will make layer-2 transactions even faster and nearly free over time.
The expansion is powered by a new>Supporters, including Ethereum co-founder Vitalik Buterin, see PeerDAS as vital for Ethereum’s long-term scalability, given that the feature should allow layer-2 networks to handle a far greater number of transactions at near-zero cost.
Buterin has described PeerDAS as “the key to layer-2 scaling,” suggesting that Fusaka could mark a major step toward Ethereum’s ultimate goal of becoming a global settlement layer for all on-chain transactions once crypto achieves mass adoption.
It remains unclear whether the Fusaka upgrade, if successfully implemented, will meaningfully affect Ethereum’s price. $ETH is down roughly 2.3% this week, to $3,760 at writing. In the days following the network’s previous upgrade, Pectra, $ETH did surge by nearly 29%—but that bump also coincided with other positive macroeconomic developments.
Users on Myriad, a prediction market operated by Decrypt’s parent company Dastan, contend that $ETH is more likely to next surpass $4,500 rather than fall under $3,100. But their degree of confidence is not ironclad—at 61% to 39% odds, respectively.
