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ARB ArbOS Elara upgrade gets developer approval
Arbitrum developers have approved the ArbOS Elara upgrade, marking one of the network's most important protocol changes in recent months. The upgrade targets both the Arbitrum One and Arbitrum Nova networks and covers developer tools, Gas fee mechanisms, and infrastructure options for institutional participants.
The AIP proposes to increase the code size limit for Stylus smart contracts to 96KB and adjust the Stylus Rust SDK accordingly. This represents a significant expansion in the contract capacity on the chain, and actually achieves the four-fold increase in Stylus contract capacity mentioned by Arbitrum One.
This upgrade also includes a change that allows Offchain Labs to modify the minimum L2 base fee on Arbitrum One and Nova, and make adjustments within specified ranges. This more flexible base fee mechanism is designed to optimize the Gas dynamics of $ARB, giving the protocol more room for adjustment when network activity is frequent or volatile, without having to conduct a full governance vote every time.
Institutional infrastructure and customizable chain options
In addition to Gas and contract restrictions, the Elara upgrade brings meaningful new capabilities to the dedicated blockchain in the Arbitrum stack. Chains built on the Arbitrum platform will receive customizable priority fees and alternative data availability APIs, allowing teams to customize their infrastructure for specific use cases, including compliance sensitive and institutional deployments.
The plan aims to integrate protocol-level compliance controls and institutional-level infrastructure into the broader Arbitrum ecosystem, allowing financial institutions and business builders to operate on the chain with the required configuration flexibility. Financial institutions and infrastructure providers increasingly view blockchain systems as a production environment that can support new markets and revenue sources, rather than as pilot projects.
It is worth noting that the ArbOS upgrade is equivalent to a hard fork for the Arbitrum version. These upgrades change the ability of nodes to generate valid Arbitrum blocks and must be voted on by the Arbitrum DAO before they take effect.
