Fusaka Is On the Horizon: ETH Updates as Ether Begins Last Pre-Upgrade Testnet

The ETH testnet phase for the forthcoming Fusaka upgrade is currently in progress, marking an important milestone for the ETH ecosystem and its implications for the ETH price. As the ETH platform prepares for Fusaka, both traders and developers are paying close attention.

Will this upgrade enhance transaction throughput, decrease fees, and catalyze a renewed surge in altcoins? Here’s everything you should know about the upcoming changes, the significance of final testing, and how the ETH price may react.

What Is The Fusaka Upgrade, And Why Is It Approaching?

The Fusaka upgrade represents the next significant network split for ETH, succeeding the Pectra upgrade that occurred earlier in 2025. It aims to enhance scalability, efficiency, and safety for the ETH network by refining how blocks and transactions are handled.

UPDATE: Ethereum’s Fusaka upgrade has commenced its final testnet phase in anticipation of the Dec. 3 live platform launch.

The upgrade features a gas cap per transaction intended to enhance block efficiency and ready the platform for parallel execution. pic.twitter.com/JA4gnDrFyA

— Cointelegraph (@Cointelegraph) October 22, 2025

Notable elements include EIP-7825, introducing a per-transaction gas cap of approximately 16.78M units, along with additional enhancements such as “PeerDAS” (Peer Data Availability Sampling). The upgrade raises the block gas limit to ~60M units, accommodating more transactions per block and providing improved price floor for Layer-2 solutions. The estimated timeline for the mainnet launch is December 2025, following a comprehensive testing program.

The successful implementation of Fusaka is anticipated to unlock increased throughput and potentially encourage faster, cost-effective transactions, essential for Decentralized finance, dApps, and altcoins established on Ethereum.

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The Final Pre-Upgrade Testnet Phase and Its Implications for the Ethereum Network

Ethereum is currently in its last testnet phase for Fusaka, marking a crucial step before the live network launch. The activation of the Sepolia testnet has already started, testing elevated gas limits and the new data-availability mechanisms. On the Holesky and Sepolia networks, the new gas cap protocols are active, preventing individual transactions from occupying whole blocks and thus enhancing reliability and security. The final public testnet launch on Hoodi is set for October 28, in advance of the live platform on December 3.

The ETH testnet, Sepolia, has been successfully upgraded to Fusaka!

Next in line is the Hoodi testnet, which is the final testnet being upgraded.

If everything proceeds smoothly with Hoodi, Fusaka should be deployed to the live platform in early December.

— sassal.eth/acc (@sassal0x) October 14, 2025

This testing phase holds considerable significance for the Ethereum price and the broader crypto non-BTC crypto crypto market, as a successful deployment of Fusaka can help restore faith in the scaling roadmap of the ETH platform. Lower fees and higher throughput could generate renewed interest in Ethereum, particularly if DeFi activity and roll-up usage surge.

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How Do Technicals and Upcoming Upgrade Catalysts Influence the Ethereum Price?

Following a remarkable performance this year, the

Ethereum
Ethereum

$3,823.26


0.32%

ETH
ETH


Price

$3,823.26

0.32% /24h





Volume in 24h

$41.61B


Price 7d

Learn more

price hit a new all-time high of $4950 and is currently retracting to the $3860 mark. This creates a double top formation, potentially prompting significant profit-taking and causing the Ethereum price to seek further support. For the weekly timeframe, this price floor level is roughly at $3850, where the price has attempted to break out three times previously. This spot presents an ideal opportunity to bet on a price increase for Ethereum, especially given the favorable fundamentals and technical indicators.

(Source – TradingView)

On a daily basis, the $3850 base level aligns with the 200 EMA and SMA base level band, further boosting the likelihood of the ETH price bouncing back from this point. Should this occur, the price will create a channel, remaining at the lower end of it. The RSI indicator is hovering around 42, nearing oversold territory. The MACD signals potential for a reversal as it approaches positive levels.

(Source – TradingView)

If Fusaka succeeds in meeting expectations, ETH might experience a rally driven by functionality instead of mere speculation, which would create a positive scenario for altcoins founded on ETH, especially with the anticipated improvement in platform efficiency.

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