Opera's latest iteration of their browser is now available, which includes improved support for both Windows and OS X, as well as enhanced support for touch-enabled Windows 8-based devices. Apple users aren't left out in the dark, either.

Users running Mac OS X 10.8 Mountain Lion get some new features, too, with alerts from Opera in the new Notifications Center and improved support for the Retina displays on the latest MacBooks and iMacs. The new Opera 12.10 also includes a button added to the address bar that uses Mountain Lion's integrated social sharing functionality. There are also some other great improvements:

• Support for the SPDY protocol to improve and secure connections. Gmail and Twitter have already started using SPDY to supplement HTTP.
• The WebSocket API is supported and turned on by default in Opera 12.10. Opera now also supports ICC color profiles and color management.
• Support for Flexbox and and @supports to give website developers more control of how their website appear in the end users' browsers.

You can grab Opera 12.10 here.