Opera Mini 4.1 Released - http://mini.opera.com
Caution on this one. I had to install the no certificate version (follow link for "If this version fails to install....") like with the beta.
However - I can not get this version to connect to the internet even with ensuring permissions are set properly. I've not had this issue with Opera Mini since version 3 so don't delete your beta until you are sure it will work for you.
EDIT - Don't know what happened but now I'm connecting.
(I'm on a BES with MDS browsing blocked so have to use TCP - unfortunately some applications don't play well in this situation)