Regretably, there is no sign of Deus Vox Encounters (DXE) being updated for MoP. So if like the officers you're one of our DXE users, make sure you load up DBM instead and get into the config and start organising it the way you want in preparation for MoP. Personally I'm trying to turn off as many clanging bells and raid warnings and I'll probably copy & rename some of the DXE sounds into the DBM folders to replace the DBM defaults.
I'm gutted that DXE seems to be dying. I was a paid up member of the RDX group back in vanilla and have used the original RDX, the following RDX-inspired original DXE and then the Deus Vox Encounters continuation of DXE ever since. Somehow to me both DBM and BigWigs never did it quite as well. If anyone has sufficient lua skills, perhaps you'd fancy taking it on? If I had the skills I would most certainly try.