Mozilla has updated its web browser “Firefox” to version 27.0. It comes with new features and updates.

The new version of the browser features a major update to the Firefox Social API, which now includes support for the old-school Web 2.0 social bookmarking tool Delicious and the Indian music service Saavn. More importantly, though, the Social API now allows users to run more than one service at a time.

Firefox’s Social API is meant to provide social networking services, chat tool and news sites with a persistent spot in the browser to pop up notifications. It launched in 2012 and Mozilla opened it up to developers last year, though I never got the impression that companies were racing to launch their Social API integrations.

The only other major new features to launch in this version are support for Google’s SPDY 3.1 protocol and the addition of Transport Layer Security (TLS) versions 1.1 and 1.2. to Firefox’s networking arsenal. These are essentially the successors of the well-known SSL cryptographic protocol.