Metasploit Express 3.4.1 was released on July 15th, 2010. This release adds 16 new exploits, an overhauled module browser,  island-hopping support, brute force support for FTP and HTTPS, enhanced  import and export functionality, and improvements to the online update  system, including support for HTTP proxies. This release fixes over 100  bugs. Full details of this release can be found in the online release notes. Existing customers can download the new release from the Rapid7 Customer Center. We also offer free trial evaluations as well. 

The screenshot below highlights the new session option for island-hopping: