Frankly, we mostly use Opera for its in-line (legal!) Torrent downloading ability, but it is always good to hear that they are working on features like those announced today. This version of Opera is supposed to use its new Javascript engine that it calls the fastest in the world. We’ve benchmarked it with Sunspider on a 13″ MacBook Pro here. Headlining the list are HTML5
Stabilization Improvements: You will find that this build is much more stable than the pre-alpha build. More polished user interface: The whole UI is more polished now. We’re still not done yet, and expect more polishes and improvements in the builds to come. Opera Unite: Opera Unite now works with this release. You can browse through and download unite apps through the Unite Apps Repository. HTML5
Download Opera 10.50 Beta for Mac Opera via Geekword