BNB Chain plans to activate the Jenner upgrade on its testnet on October 28, 2026, while the v1.8.1 client release points to October 29 at 02:30 UTC. The update combines three proposals: Payment Lane reserves 5% of each block’s gas for qualifying payments, CAS20 introduces a standard for compliant assets, and BEP-706 adds millisecond precision to block timestamps. Operators will need to update their software with reth-bsc v0.1.3 or a compatible BSC Geth release before activation to avoid falling out of sync. If testing succeeds, BNB Chain plans a mainnet deployment in late November 2026, subject to governance decisions on the full capabilities of CAS20.
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