All Fuji nodes must upgrade before 11 AM ET, October 29th 2025.
This release schedules the activation of the following Avalanche Community Proposals (ACPs):
ACP-181 P-Chain Epoched Views: Introduces a standard P-Chain epoching scheme that lets VMs know the next block’s P-Chain height in advance, improving validator set retrieval efficiency without changing the P-Chain VM itself.
ACP-204 Precompile for secp256r1 Curve Support: Adds a new precompiled contract on the C-Chain for secp256r1 (P-256) signature verification, enabling faster, cheaper native support for WebAuthn, biometric, and device-based authentication.
ACP-226 Dynamic Minimum Block Times: Proposes a new dynamic mechanism for Avalanche EVM chains where validators collectively set the minimum time between blocks, replacing the current fixed rate-limiting approach.
The ACPs in this upgrade go into effect at 11 AM ET (3 PM UTC) on Wednesday, October 29th, 2025 on the Fuji testnet.
More information about the release can be found here.
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