I meant to have a post about Gardening efforts next, but KMouth is improving lately, so I'll throw out a quick post about progress.
KMouth master branch is now Qt3 free. It's still using K3Process for the speech synthesizer command-line calls, but all Qt3Support is gone.
In other news I started a quick Qt5/kf5/QtSpeech port of it on the frameworks branch. It runs, it speaks (with a bug fix in gerrit for QtSpeech).
It looks like this currently:
There's definitely room for improvement, but it's a good start I think. Note this wont be hitting master until after QtSpeech gets a release and KDE Applications depend on it (probably Qt 5.6).