+ Faster Loading
They've reduced the size of the A9 home page.
+ Easier Access to Additional Search Columns
More than 200 OpenSearch columns are now available.
+ Personalized Tools on the Home Page
Your History, Your Bookmarks, Your Diary, and Discover are shown on the home page only when you turn them on. These tools are only shown when you are signed in.
+ Location Search
"The Yellow Pages location box opens automatically if you check the Yellow Pages checkbox. This lets you enter the location before you search."
+ Choice of Tabs or Multiple Tools on the home page
If you are signed in, you can choose between one tool at a time using tabs, or multiple tools in columns similar to the search results page. Or, if you prefer, you can hide the tools entirely.
+ Opera 8.0 support
You can find a complete list of the changes and new features here.