We've just seen an update to Firefox for Android, but that's not the only revision that Mozilla has had in the works. Tuesday also sees the release of version 17 of the desktop browser, which brings with it a number of changes and one noticeable omission. The latter is a lack of support for Mac OS X 10.5 (a.k.a. Leopard), which Mozilla first announced last month -- those on Leopard can of course continue to use Firefox 16, they just won't receive any updates. Otherwise, you can expect a new "Awesome Bar" with larger icons, more than 20 promised performance improvements and a new click-to-play functionality for dealing with outdated or potentially vulnerable plug-ins. Read the full story at Engadget.