Deep Dive
1. Gas Limit Increase to 45M (30 June 2025)
Overview: This update increases the default gas limit in Ethereum's core software, allowing each block to process more transactions. For users, this can lead to slightly lower fees and faster confirmations during peak times.
Following a recommendation from ethPandaOps, the new releases of the Geth (v1.16.0) and Nethermind (1.32.0) clients now default to a 45 million gas limit, up from the previous standard. This is a consensus change, meaning validators must adopt the new client versions to increase the network's overall capacity. It's a foundational step for scaling the base layer.
What this means: This is bullish for Ethereum because it directly increases the network's transaction capacity, which can help reduce congestion and fee spikes. It represents ongoing, incremental improvements to core performance.
(ethdaily.eth)
2. History Pruning for All Clients (8 July 2025)
Overview: This technical improvement enables node operators to delete old, pre-merge blockchain data, freeing up significant disk space without affecting network security or current operations.
As of this date, all major Ethereum execution clients support history pruning. This allows nodes to remove approximately 300-500 GB of historical data that is no longer required for validating new transactions, dramatically lowering the hardware barrier for running a node.
What this means: This is bullish for Ethereum because it makes the network more decentralized by allowing more people to run nodes on cheaper hardware. It's a key step in "The Purge" phase of Ethereum's roadmap, simplifying the protocol.
(Ethereum Daily)
3. Fusaka Upgrade Activation (3 December 2025)
Overview: The Fusaka hard fork was a major upgrade focused on data availability, introducing PeerDAS (Peer Data Availability Sampling) to efficiently scale data capacity for Layer 2 rollups.
Fusaka's main feature, PeerDAS, allows nodes to verify large amounts of data by sampling small pieces, enabling a safe increase in "blob" capacity. This upgrade is critical for reducing transaction costs on Layer 2 networks like Arbitrum and Optimism, making the entire Ethereum ecosystem cheaper to use.
What this means: This is bullish for Ethereum because it directly lowers costs for end-users on scaling solutions, improving Ethereum's competitiveness. It lays the groundwork for future scalability milestones like full danksharding.
(Newsereum)
Conclusion
Ethereum's development trajectory shows a clear focus on practical, incremental upgrades that enhance scalability, reduce node requirements, and improve the user experience through lower Layer 2 fees. How will the upcoming Glamsterdam upgrade further refine these capabilities in 2026?