There is more information to add to interface details tab, I have not done it yet because of lack of time. The ModemManager patch is getting bigger (it touches or adds 86 files to trunk) and the Plasma NM patch adds/changes other 28 files. Managing all those files outside svn makes me loose time, but since trunk is closed for new features I will have to wait until KDE SC 4.5.0 is released.
Of course I will have to change interface details window, it becomes too big when all information is displayed. Maybe I will add a new "Hardware details" tab and move some things there. When I have more time I am going to implement selecting which information to display too. The MM implementation is taking more time than I have thought because MM specification does some things differently from NM specification and I had to think about how to solve the problems that changes brought up.