Hi Millsey,
We continually work on fixes and new features, and regularly release new versions, but right now I don't know when we'll make a new release. If you're doing the rewrite because of the user input buffer problem, I would suggest you to go ahead, because that problem has not an easy solution from the VAD, it requires changes to the underlying 3CX IVR and I'm not sure when it will be addressed.
Regards,