# Fusaka Mainnet Announcement

DevFeed: [Fusaka Mainnet Announcement](<https://devfeed.tech/articles/fusaka-mainnet-announcement-17195.md>)

Original publisher: [Read original article](<https://blog.ethereum.org/en/2025/11/06/fusaka-mainnet-announcement>)

Author: EF Protocol Support

Published: 2025-11-06T00:00:00Z

Content type: release

Language: en

Sources: [Ethereum Foundation Blog](<https://devfeed.tech/sources/ethereum-foundation-blog.md>)

Topics: [Ethereum](<https://devfeed.tech/topics/ethereum.md>), [networking](<https://devfeed.tech/topics/networking.md>), [Availability](<https://devfeed.tech/topics/availability.md>), [Protocol (disambiguation)](<https://devfeed.tech/topics/protocol.md>), [releases](<https://devfeed.tech/topics/releases.md>)

Tags: [2025](<https://devfeed.tech/tags/2025.md>), [announcement](<https://devfeed.tech/tags/announcement.md>), [availability](<https://devfeed.tech/tags/availability.md>), [capacity](<https://devfeed.tech/tags/capacity.md>), [ethereum](<https://devfeed.tech/tags/ethereum.md>), [fees](<https://devfeed.tech/tags/fees.md>), [improvements](<https://devfeed.tech/tags/improvements.md>), [network](<https://devfeed.tech/tags/network.md>), [networking](<https://devfeed.tech/tags/networking.md>), [performance](<https://devfeed.tech/tags/performance.md>), [protocol](<https://devfeed.tech/tags/protocol.md>), [protocol-announcements](<https://devfeed.tech/tags/protocol-announcements.md>), [releases](<https://devfeed.tech/tags/releases.md>), [upgrade](<https://devfeed.tech/tags/upgrade.md>), [upgrades](<https://devfeed.tech/tags/upgrades.md>), [user-experience](<https://devfeed.tech/tags/user-experience.md>)

## AI overview

Ethereum's Fusaka network upgrade is scheduled for mainnet activation on December 3, 2025. It introduces PeerDAS to support higher blob throughput, along with execution- and consensus-layer optimizations and planned BPO parameter adjustments.

## Source excerpt

Fusaka follows this year's Pectra upgrade, representing a major step forward in Ethereum's scaling roadmap that improves L1 performance, increases blob throughput, and enhances user experience. The Fusaka network upgrade is scheduled to activate on the Ethereum mainnet at slot 13,164,544 (December 3, 2025, 21:49:11 UTC). Fusaka also introduces...