v6.20.0

Network Upgrade 6.2 The mainnet activation of the immediate NU6.2 network upgrade is supported by the 6.20.0 release, with an activation height of 3364600, which should occur at approximately 03:00 UTC, June 3, 2026. Please upgrade to this release, or any subsequent release, in order to follow the NU6.2 network upgrade. Security fix: remediation of the Orchard circuit The Zcash Open Development…