Finally the beta stage of Opera 9.50 has come to an end; Opera team just released the final version of Opera 9.50. The build number of the final Windows release is 10063. I just installed the final version of Opera 9.5 today, it seems to really promising. It has an all new black interface as shown in the Beta version and the browser is way faster than before. Many performance, stability and memory improvements have taken place throughout the engine.

Some of the new features included in Opera 9.5 are:
Opera Link feature:
It enables the synchronization of Bookmarks, Personal bar, Speed Dial and Notes with other instances of the browser via the menu option File > Synchronize Opera. See: Opera Link - Web Everywhere.
Quick Find feature:
It’s an improved full text history search tool. Quick Find searches for text inside pages previously visited, not just the title and address. It is available from: the address field, the history panel, opera:historysearch
New redesigned Address bar drop-down is displayed when entering text in the Address bar.
New default black skin introduced
Re-enabled the Status bar by default and copied some UI elements from the View bar to Status bar; View bar is now disabled by default.
Speed Dial- Changed default Speed Dial search engine from Yahoo to Ask.
Check out for other features over here
I like the new skin actually. Takes some time to getting used too though! Nice job Opera team!