TREE NEWS update: Zcash development organizations and engineering teams have agreed on the content and timeline for the NU7 network upgrade, with mainnet tentatively scheduled for Nov 5. Code is to be finalized by Sept 30, activated on the official testnet on Oct 6, and a final mainnet activation decision made on Oct 20 based on test results. NU7 includes cutting block intervals to 25 seconds (ZIP-218), disabling v4 transactions, and integrating a new issuance mechanism.
Zcash NU7 Upgrade Tentatively Set for Nov 5 Mainnet Launch
NU7 bundles faster blocks, a transaction-format cutover and a new issuance mechanism into a single upgrade, so its risk is concentrated rather than incremental. The staged gates — code freeze, testnet activation, then a go/no-go — give developers room to slip without losing the whole schedule, but each gate is a real decision point. The v4 disable matters most for wallets, exchanges and custodians, since that is where integration lags tend to surface. Whether the Oct 20 review confirms mainnet activation is the open question.
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