Arbitrum just quietly completed a "power upgrade."

On January 8th, ArbOS Dia officially went live, and this is no minor patch. The new pricing model directly smoothed out gas fee volatility issues, which users who trade frequently can definitely feel the difference in. At the same time, native mobile signature support was introduced — through biometric solutions like Passkeys and FaceID, the mobile wallet user experience reached a new level.

The significance of this upgrade lies in the fact that while Arbitrum is reducing costs, it's also solving the user experience ceiling of the Web3 application layer. Stable gas fees mean transaction costs become predictable, and biometric support lowers the barrier to entry for crypto wallets. For both the developer ecosystem and regular users, these are tangible improvements. The market hadn't fully reacted at the time, but this kind of infrastructure-level optimization typically shows its power when subsequent application explosions occur.