These were originally set to be 'leaked' files but since the OS went official on some UK carriers, they can't really be called leaks anymore. That said, the files are still good for those who have not been prompted to update but still want the OS. Keep in mind, they are autoloaders so they should be treated just like a leak in terms of installing the OS. Right now, you'll find the autoloader for the Z30 and the STL100-1 Z10, while the rest are radio links, to be used on various other devices in conjunction with the Z30 files.
As noted, the usual disclaimer applies here. Be sure to perform a full backup using BlackBerry Link before you install any OS. Check out our full tutorial on using an autoloader here and don't hold us responsible should anything go bad (though you can always reload your OS). You can discuss and grab the download via the link CrackBerry Forums link below.