The PostgreSQL plugin is no longer built-in in Zabbix agent 2. Instead it is now a loadable plugin in the agent 2.
This change may/will break automations with Ansible, Chef, etc, because it is no longer possible to pull the plugin repository directly.
See also: PostgreSQL loadable plugin repository
The vmware.vm.discovery item now returns the vm_customattribute array instead of vm.customattribute. This formatting change has been implemented to simplify further processing of the returned JSON (for example, in preprocessing steps or LLD macros).