Firefox has hit a new landmark today with the release of version 40. The biggest change is improved Windows 10 compatibility, though previous versions of Firefox certainly work fine with Microsoft's new OS. Instead, the changes are mostly aesthetic to bring the browser in line with Windows 10's design and make it easier to use on a touchscreen. For instance, the "close" buttons on tabs are now bigger so that they're easier to use on a touchscreen, and the address bar has bigger fonts. It also has revised tabstrips and toolbars plus a custom Windows 10 theme.Other new features focus on security, including extra protection against risky downloads and warnings for unsigned extensions (they'll be blocked completely in Firefox 41). It's also bring better support for your computer's graphics, which will result in smoother scrolling and animations. Unfortunately, the new version is still 32-bit and not 64-bit, with no word on when that's going to change. The updates are being pushed to all browsers over the next few days, but if you're feeling impatient, you can grab it here.