A Filecoin Warm Storage Service (FWSS) v1.3.1 contract upgrade is scheduled for the Filecoin Calibration network on August 8, 2026, after epoch 3,961,387 (approximately 05:46 UTC). The existing FWSS and ServiceProviderRegistry proxy addresses will remain unchanged, and the matching StateView will be switched after validation. Mainnet is not affected by this maintenance. Release details: https://github.com/FilOzone/filecoin-services/releases/tag/v1.3.1