Bit of hyperventilation in the article. The Brahmos is not the world’s first supersonic sub-launched CM. The Russians had the SS-N-19 Shipwreck for almost 30+ years now.
http://en.wikipedia.org/wiki/P-700_Granit
I know for a fact that the Sunburn scared hell out of the Navy in the mid-80s.
Again, I may have understood the article incorrectly, but that's what I gleaned from it.
I also know in the past there is one case (by India btw) where they used an anti-ship cruise missile (the Styx) as a jury-rigged land-attack cruise missile (when the Styx was used against Pakistani naval base, taking out facilities that directly or indirectly took out most of the Pakistani navy during that war). Thus, I am sure an (for example) Oniks could be jury-rigged into a land-attack cruise missile. But I still think, maybe incorrectly, that the BrahMos is the first submarine-launched, supersonic, cruise missile.