Rosetta Stone Cantonese?

Rosetta Stone Chinese
Nope.

Rosetta Stone , the super-hyped, available-everywhere language teaching software seems to think all Chinese people speak Mandarin . While most people in China do speak Mandarin (somewhere around 80%), at least 100 million people speak Cantonese, making it one of the top ten most common spoken languages in the world, well above many of the smaller languages Rosetta Stone supports , like Irish - under a million native speakers.

Now to find some other software to learn Cantonese.