labor to tax super at 30%

I have read an article that indicates the following, it was called a Mike Carlton Special? It was sent to me without reference so I'm not sure of the source. Anyone else have any info on the following comment? 30% tax on super you've got to be kidding!

"A flood of speculation from Canberra suggests the government will slap a higher tax on the earnings of money invested in super, up from 15 per cent to perhaps 30 per cent".