Mozilla on Tuesday launched this latest version of its popular , which comes packed with numerous significant new features that promise to make life better for users in myriad ways.

If you already use Firefox, this new update will likely be on its way to you automatically through Mozilla's now nearly , which debuted in the Windows version of Firefox 12.

If you've been using something else to browse the Web, though, this would be a great time to give Firefox a fresh look. The video below offers an overview of what's new, but here are a few key reasons why Firefox 13 is well worth checking out.

1. Speed

Though SPDY has been included in Mozilla's browser since , Firefox 13 marks the first time it's been enabled by default. Designed as a successor to HTTP, SPDY reduces the amount of time it takes for websites to load, so "you will notice faster page load times on sites that support SPDY networking, like Google and Twitter," according to today's official on the Mozilla blog.