Microsoft is said to be considering releasing a version of Office for Linux. Phoronix reports that Microsoft is taking a 'meaningful look' at producing Office for Linux in 2014.
Earlier this week, Michael Larabel, founder of Phoronix, tweeted that he had heard Microsoft was looking into producing Office for Linux next year. Larabel expanded on that tweet in a blog post published on Phoronix this week. According to Larabel, the information comes from a source he spoke to during the Free Open-Source Developers' European Meeting (FOSDEM) this past weekend. This source told Larabel that Microsoft is taking a "meaningful look" at a full port of Office for Linux. The reason for Microsoft's increased interest in Linux is apparently due to Linux showing signs of commercial viability on the desktop.
Indeed, with Microsoft rumored to working on Office for Android, the idea of Office for Linux is pretty plausible (the Android OS is itself based on Linux).