There wasn't much progress on Wammu in past months. Partly it has been caused by changes in real life, but major reason was that I want to go away from wxPython and this step is quite large to happen over night :-).
Meanwhile I didn't do much in current Wammu codebase, but few bugfixes were applied. I will fix few more bugs during weekend and release new version. Don't expect much of it, I will only try to test it a bit on Windows and fix some recently reported bugs. So most changes are already in and you can see them in arch repository.
It will be most likely latest which is using wxPython and I will start writing completely (well this it not true, most code will be reused) new Wammu which will use PyGTK. It will be highly modullar and should provide all those heavilly missing features as remembering of read data and support for multiple phones.
I don't have any timeframe when new version will be ready, but I'd like to make preview available somewhere in September. But life can bring completely different worries, so everything might be completely different :-).