The release notes for SAP GUI for Java 7.30 can be found here.
Linux (37.420 kB) – openSUSE 12.2, Fedora 17, Red Hat Enterprise Linux 6, Ubuntu 12.04.This version of SAP GUI is available for the following operating systems: Details on system requirements can be found on SAP Note 1761605. In order to download and install it, follow this link. SAP GUI for Java 7.30 was released earlier today.