ArbOS Dia just went live 🚀 It’s a product-first upgrade that makes fees smoother, throughput more scalable, and onboarding more familiar - all while staying Ethereum-aligned. Here’s what Dia means for builders 👇🏻

Dia isn’t about shiny new features. It’s about improving the default experience on Arbitrum: • More predictable gas • Better scaling foundations • Modern authentication tools • Continued alignment with Ethereum’s Fusaka-era EVM

Smoother gas prices Dia updates Arbitrum’s pricing model to reduce sharp gas fee spikes during high demand. Result: fewer “surge pricing” moments and more predictable UX for users during traffic bursts.

Mobile & enterprise-grade onboarding Dia upgrades secp256r1 support to match Ethereum’s post-Fusaka spec. Builders can confidently design for: • Passkeys-style auth • FaceID & biometric-style signing • Device-secured keys • Enterprise IDPs & recovery flows

More flexible gas tokens for Arbitrum chains Custom chains can now support interoperability-friendly gas tokens (LayerZero OFTs, xERC20s, native USDC/USDT0) via delegated mint/burn. More design freedom, fewer future forks.

Dia is an upgrade for people who ship. • Smoother fees under load • Stronger scaling foundations • Familiar onboarding for real users • Ethereum-aligned execution • More flexibility for custom chains Quietly ambitious. Practically useful. Built for what’s next.