According to the official Opera Mini blog, our favourite proxy-based web browser just got a significant update. The version number only changes from 6.1.25380 to 6.1.26266 but, crucially, Opera Mini now works with Symbian Belle phones and also now uses the built-in Symbian Anna portrait keyboard, at least in generic text entry fields (if not URL entry). In a matching move, Opera Mobile, the proxy-less but more capable browser, has also been updated, with the same compatibility changelog. Links and screens from Opera Mini below. 

From the blog entry:

The Opera Mobile team is happy to announce an updated version of Opera Mini 6.1 for Symbian.  

In this release we added support for brand new Symbian Belle devices and improved integration with half-screen keyboard on phones running Symbian Anna. 

To get updated please visit http://m.opera.com from your Symbian phone or http://www.opera.com/mobile/download/pc/ from PC. 

Opera Mobile also has a similar update to its v11.1 browser.