http://www.techspot.com/news/22153-ibm-unveils-lotus-notes-for-linux.html
<snip> IBM is pleased to announce that they are to release a version of Lotus Notes client groupware for Linux. A Linux client has been a long time demand of users of Notes, of which there are some 125 million worldwide. The first available version will be for Red Hat Enterprise Linux 4 Update 3 clients, with a version for Novell Suse Linux desktop coming within three months. IBM promise that, so long as there is a Domino server 7.0 back-end, Linux Notes users will be able to run all applications that are currently available on Windows. </snip>