Mozilla is testing the page, which pings the company servers, then returns a list of plug-ins, noting those that are up-to-date and ones that should be updated.
A month ago, Mozilla debuted its plug-in checking with updates to Firefox 3.5.3 and Firefox 3.0.14, which automatically detected outdated versions of Adobe's Flash Player and prompted users to upgrade to the newest - and theoretically the most secure - edition of the browser plug-in.
At the time, Mozilla said it would follow that initial move with others, including the publishing of a page that Firefox users could visit to check the status of other vendors' plug-ins.
Two weeks after introducing the plug-in check, Mozilla said it had convinced 10 million Firefox users to go to Adobe's site and grab the latest version of Flash.
According to Blair McBride, the Mozilla developer who announced the test plug-in check page on his blog today, Mozilla will add a built-in plug-in checking feature to Firefox 3.6, which is slated for release before the end of the year.
"Firefox 3.6 will have this integrated to make sure users know when they have an outdated plug-in, without having to manually visit the Plugin Check page," said McBride. "Whenever you load a page that uses a plug-in that is out of date, you'll get [a] warning."
The warning will read: "Some plugins used by this page are out of date". A button will be available to update the plug-in.
Firefox 3.6 will also sport changes to the browser's add-on too. "The Plugins tab of the Extension Manager (Tools/Add-ons) will indicate which of your plugins are out of date," promised McBride.
The changes are to appear in the first, and likely only, beta of Firefox 3.6; that preview is slated to ship next week under Mozilla's published schedule.
Security experts have commended Mozilla on the moves. Last month, Wolfgang Kandek, the chief technology officer at security firm Qualys, called it "a great way to improve the security of web browsers," as he noted that vulnerabilities in Adobe's Flash are frequently targeted by hackers.
Mozilla has already caught one bug in the plug-in test page. Mac users running Snow Leopard were told that QuickTime was out of date, even though they had installed Mac OS X 10.6.1, Apple's sole security update so far for the new OS.
The problem, according to a post on Bugzilla , Mozilla's bug and change-tracking database, was that Snow Leopard dubbed its version of QuickTime as 7.6.3, while its predecessor Leopard tagged it as 7.6.4.
Mozilla implemented a fix to the plug-in checking page to accurately report QuickTime 7.6.3 as the most up-to-date edition for Snow Leopard users.
See also: Firefox could stop web attacks