- Ethereum core developers disclosed the tentative date of December 3, 2025, for the launch of the Fusuka upgrade.
- Ethereum price rides a short-term consolidation trend within the formation of a pennant pattern.
- ETH fear and greed index at 48% accentuates the neutral sentiment among market participants.
On September 20th, the Ethereum price showed low volatility sideways trading with an insignificant gain of 0.01%. The consolidation damps investors sentiment as many expected a notable upswing after the 0.25% Fed rate cut. Despite the slowdown in price action, Ethereum developers underscore their focus on scalability and efficiency by releasing the tentative date and details for the upcoming Fusuka upgrade.
Ethereum’s Fusaka Upgrade Slated for December 3 After Testnet Trials
The next significant network upgrade of Ethereum, named Fusaka, is scheduled to take place on December 3, 2025, based on the decisions made by the latest All Core Developers Consensus (ACDC) call. It will be implemented in October, following three months of testing on the public networks of Sepolia, Holesky, and Hoodi. The majority of the mainnet activation will depend on the successful results there.
Fusaka is being introduced to enhance data availability and scaling, especially for the layer-2 rollups that require a “blob” storage to reduce costs and enhance efficiency. Added in the Dencun upgrade at the beginning of this year, blobs are used to temporarily store large amounts of rollup transactions off the Ethereum base layer.
Deployment in December will not change the parameters of the blobs instantly. In its place, developers have chosen a slow introduction by a series of Blob Parameter Only (BPO) forks. About two weeks later, Fusaka is brought online; and the blob cap will be expanded by BPO-1 to 15. A second fork, BPO-2, that will be undertaken early in January, will further push the ceiling up to 21. These steps are planned to be done in phases that track network performance prior to increasing limits and need no new releases of client software.
EIP-7594 will also ship with Fusaka, and it offers Peer Data Availability Sampling (PeerDAS). The feature enables nodes to establish that blob data is available without downloading it in its entirety, reducing the bandwidth and storage needs to play along.
To enhance security, the core team of Ethereum has initiated a multi-week audit with rewards of over 2 million dollars to find vulnerabilities in the upgrade.
The development comes on the back of the May 1 release of Pectra; the May 1 release added validator staking options and account abstraction tools, which further demonstrate the systematic scaling and efficiency enhancement of Ethereum.
Ethereum Price Coiling For Next Major Breakout
Over the past six weeks, the Ethereum price has been wavering around the $4,500 mark with notable swings, indicating the lack of initiative from buyers or sellers. However, an analysis of the daily chart shows that this consolidation is resonating actively within two converging trendlines of the pennant pattern.
Theoretically, this narrow sideways trend allows buyers to replenish the exhausted bullish momentum after a significant rally. The coin price still holding above the 23.6% Fibonacci retracement level accentuates that the current pullback is healthy for buyers to drive the price uptrend.
That said, the current bearish pullback in Ethereum price could push another 5% drop and seek support at the lower trendline around $4,220. If the pattern holds true, the coin price will build sufficient momentum to breach the overhead trendline of this triangle with a daily candle closing.
The post-breakout rally could drive a price rally above the psychological level of $5,000.
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