Windows: As expected, Opera made version 10.5 of its browser official today, calling it "the fastest browser on Earth" and also touting its Windows 7 integration, HTML5 video support, better private browsing and more.
In terms of HTML5 and video, Opera has gone the way of Firefox, supporting native, Flash-free streams of the Ogg Theora format, but not H.264. Apple's Safari supports only H.264, and Google Chrome supports both. Opera has also added in extensive Windows 7 graphical look and taskbar support, as we've detailed, and also added the seemingly requisite "private browsing" option.
And in "cold" (right off a reboot) and "warm" (having previously opened) start-ups:
However Opera did it, they've managed to get everyone's attention with their new Carakan engine.
Opera 10.5 is a free download for Windows systems only; Mac and Linux users should expect their own versions to follow very soon.