Personally, I haven't had a response from either the mailing list or replies on myApps for well over three months. And with the last update on the ARB trello board being from September 16th, I have to wonder if there is any progress being made for anyone?
Well, if you look at the mailing list archives, it seems like they are responding to people there. And some of the responses are in regards to how long things take. They are swamped right now it seems.
The Ubuntu App Review board is certainly not dead/scrapped by any stretch of imagination. Its just that we are undergoing a transition period in forming new ARB with new members, Our processes have slowed down a bit and there is a low volume on the mailing list. So Kindly bear with us as we are in a transition process.
On behalf of the ARB