CoinMeta Data: The Zcash Foundation announces the release of version 7.0.0 of Zebra, which supports the nu7 mainnet. Node operators are required to upgrade before block 3,543,405 (expected to be around November 5th) in order to remain on the consensus chain. In a announcement on October 22nd, the foundation stated that the older version 6.4.x will stop running a few days before activation. Features of the new version include a block time of 25 seconds, a network sustainability mechanism, and fixes for five security recommendations.