For fans of the free Firefox Web browser from Mozilla, there's good news. A new version—and a security patch for an older version—are set to be released to the online world on Tuesday Jan. 31.

According to Computer World, the new software will be able to automatically determine which add-ons—pieces of Firefox software developed and distributed by others on the Web—are compatible with the new Web browser. The new feature will supposedly allow Mozilla, a non-profit organization of software programmers, "a faster release schedule" for the browser. (Under its "silent update" plans, new versions of Firefox could be released every six weeks.)

One feature involving Firefox's "tabbed" browser experience, however, has been reportedly delayed. The ability to display "thumbnails" or snapshots of previously viewed Web sites whenever a new browser window is opened—a feature that is already standard in other competitive browser software, such as Google Chrome and Apple Safari—won't be ready until mid-year.

Meanwhile, Firefox's developers will also reported release a security fix to its two-year old browser, Firefox 3.6.

Mozilla OKs Firefox 10 launch this week [Computer World]
Firefox 12 Tab Features May Have Been Prematurely Hyped [PC World]
Firefox flirting with half-baked Chrome launcher rival [SlashGear]