In recent days I got two announcement about starting projects using python-gammu. Both of them are GUI applications, so it looks like Wammu will have competitors.
It's good to see that, because I seriously don't have much time for writing Wammu and this will bring users other possibility. And maybe it will push me harder to finally make PyGTK rewrite of Wammu :-).
Let's see how will these projects evolve, but I hope they will be successful.