Zabbix 3.0, What's new - Parte 3
Better zoom - In previous versions the shortest period you could zoom into was one hour. Now this limit has been lowered significantly to one minute.
Resolution of user macros made transparent - To make the resolution of macros transparent, there is now a new option in host and template configuration forms with macro resolution details.
Automated selection of host inventory mode - In previous Zabbix versions all hosts were created with disabled host inventory by default and the only way to change that was through the properties of each individual host. The new Zabbix version comes with two new automated ways of selecting host inventory mode.
Bulk acknowledgement made more flexible - In Zabbix 3.0 you have more flexible options when using bulk acknowledgement. You may choose to acknowledge only the selected event, or all problems events as well, or all events for the problem.