Most of users noticed that there is not much progress in Wammu development. This is mostly caused by problems which wxPython already caused me and drops my motivatio to create something new using it to zero. However I want Wammu to have future, so it looks obvious, that it has to leave wxPython.
For now I'm decided to go either with PyGTK or using some high level framework as Kiwi. The latter gives advantage of better abstraction, but pure PyGTK could attract more developers. I'm not yet decided about this choice and I'm creating proposal for highly modular core, which should allow (somewhat, at least for beginning) idependent plugins to handle different data in phone (and later maybe even different backends).
If you would like to join me in developing wammu-ng (the name will probably change), you're welcome to drop me a mail on email@example.com.