Just ran across this thread... So, to let you know, there is a simple solution of the OP problem - AppWatch. It's extras-devel for now, but it was created to monitor repositories, and Ovi is, after all, just another repository. The currently available version in Extras-devel sadly does not know about Ovi yet, but I have added it to the sources already, and will check back here when a new version hits extras-devel.