The big update for Firefox 14 is that Google searches are automatically sent through HTTPS by default. Here’s how team at Mozilla explained it when they introduced HTTPS search in Aurora two months ago:
Enabling HTTPS for these searches shields our users from network infrastructure that may be gathering data about the users or modifying/censoring their search results. Additionally, using HTTPS helps providers like Google remove information from the referrer string. While Google users may expect Google to know what they are searching for, Firefox users may not be aware these search terms are often transmitted to sites they visit when they click on items in the search results; enabling HTTPS search helps sites like Google strip this information from the HTTP referrer string, putting the user better in control of when and to whom their interests are shared.
Much security fixes etc noted as well. It's not a big update but some fine additions, changes, fixes.
And there's more to come!
Firefox 15 Will Finally Fix Memory Leaks Caused By Add-Ons - WebProNews
One of the major problems with current builds of Firefox is that some add-ons can cause massive memory leaks that forces the browser to consume a lot of memory. This slows down your computer which slows down your browser and then you switch to Chrome because you’ve had enough. The team at Mozilla is going to fix that problem in Firefox 15.
Finally!!! Thank you Mozilla Firefox Team!