25-second block times are the structural headline of NU7, Zcash's next network upgrade, which targets November for mainnet activation. Testnet activation is planned for Oct. 6. NU7 will also preserve the network's existing halving schedule.
| Parameter | NU7 value |
|---|---|
| Block time | 25 s |
| Testnet activation | Oct. 6 |
| Mainnet target | November (projected) |
| Halving schedule | Preserved |
The block time cut is the upgrade's primary protocol change. Short. Preserving the halving schedule means the block reward timeline carries forward unchanged into the faster cadence, keeping the supply issuance curve intact even as the base-layer rhythm tightens.