# 20 What's new in Zabbix 2.0.15

### Frontend improvements

#### Updated translations

-   Czech
-   Japanese
-   Polish

### Daemon improvements

-   While item `net.tcp.service[ntp]` has existed for a long time, it
    almost never worked, because it tried to probe NTP protocol over
    TCP. It was rewritten to work over UDP and it now works.
-   For Java gateway, it is now possible to specify timeout for JMX
    network operations using **TIMEOUT** [configuration
    option](/manual/appendix/config/zabbix_java) in *startup.sh*.
-   In actions, it is now possible to execute a custom script on the
    server if trigger expression contains multiple hosts.

### Miscellaneous improvements

#### Validation of global regular expressions in LLD rules

A check for valid reference has been added for global regular
expressions in LLD rules. If entered reference is not valid, due to
misspelling or missing referenced global regular expression, the
respective LLD rule will become unsupported and appropriate error
message will be displayed.