Opera released the Opera Browser 11.10 final version. The main changes on the version 11.10 is the New Opera Presto 2.8 rendering engine, Speed dial changes and also the support of Google WebP image format.
It have made changes to the Opera Turbo feature (which will help you to browse faster on slow internet connections), so that the images are with reduced size and better quality. See bellow for a sample.
The most noticeable difference is probably WebP. An open standard image format that was released with some fanfare by Google last year.
See the comparison of Normal, Opera Turbo and Opera 11.10 Opera Turbo
Read more on On a horse? Opera Turbo to the rescue! - Opera , Why the New Opera is Perfect for Slow Connections - Digital Inspiration and Opera 11.10 Makes Compressed Turbo Browsing Even Faster - Life Hacker
Opera 11.10 Changelog
Also if you are a webmaster you can customize the look of your website on speed dial
You can see the http://geekiest.net just shows the image on the Speed dial. You need to add a line of code on head section (just like the favicon)
<link rel="icon" type="image/png" href="http://path/to/logo.png">
Read More here