Firefox 27 has been released by Mozilla.

The latest version of the popular open-source browser comes with a major update to the Firefox Social feature introduced back in 2012. Originally supporting just Facebook, the selection was later expanded to include little known services like Cliqz and Mixi.

Today’s update adds support for bookmarking site Delicious (trivia: after leaving OMG! Ubuntu! Benjamin Humphrey worked on its redesign) and Saavn, a music service based in India. Furthermore, the Social API is now able to connect to more than one service at a time – a change that should go some way to persuading developers to give integration a whirl.

Social shenanigans aside, Mozilla has also added support for the latest SPDY 3.1 protocol, and TLS 1.1 and 1.2, helping to beef up the browser’s networking prowess.

One lone Linux-specific change, a fix for content rendering issues with Azure/Skia, also features.

Firefox 27 is a free download, available from today from the Mozilla website. Ubuntu users will receive the update through the Software Updater utility at some point in the next few days.