SAP GUI for Windows 7.30 is built with Visual Studio 2010 (which is supported until July 2015). Therefore, SAP GUI for Windows 7.30 can be supported longer than release 7.20 (see also note 147519).
See PAM here: http://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/d0f3985b-ebf4-2a10-acba-9d7fe5d3d1d0?QuickLink=sap-gu…
I don't think it will be released soon. But who knows?