# Checkpoint #8: Jan 2026

DevFeed: [Checkpoint #8: Jan 2026](<https://devfeed.tech/articles/checkpoint-8-jan-2026-17204.md>)

Original publisher: [Read original article](<https://blog.ethereum.org/en/2026/01/20/checkpoint-8>)

Author: EF Protocol Support

Published: 2026-01-20T00:00:00Z

Content type: news

Language: en

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

Topics: [Ethereum](<https://devfeed.tech/topics/ethereum.md>), [Development](<https://devfeed.tech/topics/development.md>), [Availability](<https://devfeed.tech/topics/availability.md>), [data](<https://devfeed.tech/topics/data.md>)

Tags: [2026](<https://devfeed.tech/tags/2026.md>), [availability](<https://devfeed.tech/tags/availability.md>), [data](<https://devfeed.tech/tags/data.md>), [dev](<https://devfeed.tech/tags/dev.md>), [ethereum](<https://devfeed.tech/tags/ethereum.md>), [feature](<https://devfeed.tech/tags/feature.md>), [research-development](<https://devfeed.tech/tags/research-development.md>), [update](<https://devfeed.tech/tags/update.md>)

## AI overview

Ethereum's January 2026 core development update covers the Fusaka upgrade, independent blob-parameter adjustments, and progress toward the Glamsterdam and Hegotá upgrades. It reports that Fusaka introduced Data Availability Sampling, increased blob capacity for Layer 2 usage, and that work continues on ePBS, BALs, and other proposed features.

## Source excerpt

Ethereum's All Core Developer calls are a lot to keep up with, so this "Checkpoint" series aims for high-level updates roughly every 4-8 weeks, depending on what's happening in core development. See the previous update here. If you enjoy reading core development updates, you may also be...