Todd Tuckey and I have trying to find pics/prove they were made for 10 years. Years ago I saw some Atari paperwork that mentioned a Xevious cabaret, but for the life of me I haven't been able to find it again! A few leads have turned-up over the years, but they turned out to be other Atari cabarets or entirely different games, cabinets, etc.
I do plan to publish a revised copy of my "master list" of all cabaret, mini, trimline, etc. games. within the next couple of weeks (just trying to finalize another game before doing so).
Scott C.