ZenCash Mandatory Software Upgrade & Staking Date ChangeZenCash rescheduled the date of the next mandatory software upgrade from the end of May to the start of July 2018 to coincide with Zen 2.0.11 deprecation (cease to function). The mandatory upgrade will include major upgrades and improvements.
The current version of Zen, 2.0.11, will cease to function at block 332576. This will take place on or around June 26, 2018. All secure node operators will need to complete the upgrade to the new version of Zen software before the deprecation.
https://blog.zencash.com/mandatory-software-upgrade-timeline/ Thanks for your info