Arbitrum Activates ArbOS 61 Elara With Optional Orbit Compliance Filters
Arbitrum has activated its ArbOS 61 “Elara” upgrade, adding new tooling for Orbit chains, including an optional protocol-level compliance filtering feature for enterprise deployments.
The upgrade went live on August 20. Node operators are required to update to Nitro v3.11.3. Elara also expands the Stylus contract size limit from 24 KB to 96 KB, giving developers more room for larger smart contracts.
The compliance filter will likely attract the most attention.
But the key word is “optional.”
The feature is designed for private or enterprise Orbit chain operators. It should not be described as censorship on public Arbitrum One or Nova networks.
TL;DR
- Arbitrum activated the ArbOS 61 “Elara” upgrade.
- The upgrade adds optional compliance filters for Orbit chains.
- Stylus contract size limits expand from 24 KB to 96 KB.
Why Elara Matters
Arbitrum is no longer just one L2.
The ecosystem includes Arbitrum One, Nova, and a growing Orbit chain framework that lets teams launch custom chains using Arbitrum technology. That means upgrades increasingly affect not only public users, but also teams building specialized networks.
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