Personalize Opera Mini by choosing a new colorful skin. We have reintroduced the popular skinning feature from Opera Mini 3.
Performance
Opera Mini 4.2 can use our newly established server park in the US. This means significantly faster page downloads for our users in the Americas and Asia-Pacific region. Users in the rest of the world will also experience faster page downloads since we’ve reduced the load on our other servers.
Video
We are working to make video content available on more phones through Opera Mini. If you have a new Sony Ericsson or Nokia phone, the chance is high that you can take Opera Mini for a spin on m.youtube.com.
Sync your Notes
The handy Notes functionality from the Opera Desktop Web browser just got more portable through Opera Link. All of your notes are available in Opera Mini directly from the Bookmarks menu.
and some info from opera mini blog
Edited: Opera Mini 4.2 beta will be installed next to your other Opera Mini version(s), so there's no need to delete anything before downloading the beta.
Here are the new features added since Opera Mini 4.1:
* Synchronize, edit and delete notes via Opera Link * 24 new languages * Better handling of RTSP, enabling more users to watch video * Skins are back (along with new skins) * "Accept" link at the end of the EULA (for BlackBerry users)
