Even though the price of Ethereum, the largest altcoin, lagged behind expectations throughout 2025, the network itself experienced a year filled with significant internal developments. The year kicked off with leadership debates within the Ethereum Foundation and progressed with successive protocol updates, security priorities, and interoperability goals. The developer community’s pressure led the organization to redefine both its governance structure and long-term vision. The resultant scenario indicated a profound transformation on the protocol side, independent of the price chart.
Pectra Sparks Major Reorganization
In early 2025, the Ethereum Foundation faced criticism for losing its direction. Public calls for “wartime leadership” carried internal debates to the forefront, prompting concrete actions in February. Aya Miyaguchi, the longstanding executive director, transitioned to the presidency, and Vitalik Buterin vowed to restructure the leadership. Hsiao-Wei Wang and Tomasz K. Stańczak were appointed as co-executive directors, while a new narrative and marketing unit named Etherealize was established under Danny Ryan. During spring, the board and R&D structure were simplified, some teams were merged, and layoffs were implemented to focus on core protocol priorities.
This organizational change found its counterpart in the technical sphere with the Pectra update activated in May. Defined as the Prague-Electra merger, the update, through EIP-7702, brought account abstraction to the mainnet, raised the maximum stake cap for validators to 2,048 ETH, and expanded data blob capacity. In the first week following the update, the creation of thousands of new authorization transactions on the mainnet indicated swift adoption of smart account flows by wallet providers. Concurrently launched, the “Trillion Dollar Security” program systematically addressed threat surfaces, protocol risks, and user experience-related vulnerabilities in line with the target of becoming a global financial infrastructure.
Fusaka Pushes for Scalability, Privacy, and Interoperability
With the summer, attention shifted to the next major update, Fusaka. Vitalik Buterin asserted that the PeerDAS data availability scheme at the heart of the update would significantly increase the capacity of Layer-2 networks. In tandem, the “dAI” initiative aimed to position Ethereum as the foundational infrastructure for AI-based systems was announced, and efforts towards decentralized AI applications were initiated. Parallel interoperability endeavors sought to convey the feeling of a single Blockchain in the increasingly crowded Layer-2 ecosystem, leading to the publication of “Interop Layer” frameworks for cross-rollup messaging and developer experience.
The focus on privacy also accelerated throughout the year. The Foundation shared an end-to-end roadmap covering private read-write and proof processes and established a dedicated Privacy Cluster team for this domain. In the fall, the Kohaku proposal provided a framework on how to support privacy-oriented applications without compromising auditability and decentralization.
By the end of November, the block gas limit was raised to 60 million. Fusaka was swiftly implemented thereafter, transitioning to a biannual hard-forking schedule. As the year closed, naming the forthcoming update in 2026 as “Hegota” clarified the medium-term roadmap and signaled the permanency of the advancements made with Pectra and Fusaka.
