http://my.opera.com/desktopteam/blog/2010/04/15/evenes-mac-beta-two
Highlights
Generally improved scrolling with added support for scrolling with momentum
Support for VoiceOver screen-access
Faster domain name lookup on Mac OS 10.6
Support for Mac OS 10.4 and greater on Intel and PPC
Known Issues
Some standalone widgets may misbehave on PPC
Some ECMAScript stability problems on PPC
http://www.opera.com/docs/changelogs/mac/1052b2/
http://www.opera.com/browser/next/