TLDR
Ethereum (ETH) already increased blob capacity in 2025 and is expected to raise it further during two 2026 upgrades, early-to-mid (Glamsterdam) and late (Hegota), per recent roadmap updates.
- 2025: Pectra increased blob throughput; Fusaka activated PeerDAS to support higher blob counts (upgrade summary).
- 2026: Next capacity boosts are tied to Glamsterdam (H1) and Hegota (H2) per developer timing notes (developer timing).
- Broader plan: 20262028 steps include moving execution payloads into blobs and increasing gas limits to safely support higher throughput (roadmap outline).
Deep Dive
1. 2025 Increases
Ethereums blob capacity rose in 2025 via two major upgrades. Pectra increased blob throughput, and Fusaka enabled PeerDAS (data availability sampling), which lets nodes safely handle higher blob counts without straining hardware (upgrade summary).
- These changes coincided with higher daily transactions and lower fees, consistent with a scaling path that uses blobs for cheap L2 data posting (performance context).
- Blob capacity increases are part of EIP?4844s trajectory: blobs are dedicated data chunks for rollups, reducing L2 costs by making data availability cheaper.
L2s can post more data at lower cost, which generally improves throughput and helps fees stay low during activity spikes.
2. 2026 Upgrade Windows
Further blob capacity expansion is expected across two 2026 releases. Developer notes point to Glamsterdam in early-to-mid 2026 and Hegota in the second half of 2026, framed as the next major network upgrades (developer timing).
- These 2026 upgrades focus on performance, decentralization, and long-term sustainability, aligning with the rollup-centric roadmap where blobs are key to capacity (upgrade overview).
- Precise blob-per-block targets can change as client teams finalize specifications and safety thresholds.
Treat early-to-mid 2026 as the next likely window for a meaningful blob capacity bump, followed by another in late 2026, subject to final All Core Devs decisions.
3. 20262028 Roadmap Steps
Vitalik Buterin outlined a multi?year plan: larger non?ZK?dependent gas limit increases begin in 2026; between 20262028, gas repricing, state changes, and moving execution payloads into blobs are designed to safely support higher throughput; by 20272030, ZK?EVM validation becomes primary, enabling even larger capacity (roadmap outline).
- This sequencing aims to raise throughput while preserving decentralization and security.
- Distributed block building and formal verification milestones backstop the scaling changes to prevent centralization risks (roadmap outline).
Blob capacity increases arent a one?off theyre staged across several releases, with safeguards to keep Ethereum credibly decentralized as it scales.
Conclusion
Answer: Ethereum already boosted blob capacity in 2025 and plans further increases with two upgrades in 2026, then additional steps through 2028. The path is incremental and safety?driven, so exact blob targets may shift as client teams finalize specs.
Confidence: moderate because timing references come from recent developer summaries; specific blob counts and exact dates can change as releases lock in. Verify timing by watching the next All Core Devs notes linked from the upgrade reports above.
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