Actually, it's good that the peak oil story is starting to "leak." Not that that will lessen the strident denials any time soon.
Good piece, although Birol tends to overstate estimates of when the peak is supposed to occur. He puts it at a diplomatic 10 years, possibly to soften a hard story that nevertheless still needs to be told.
The fact is, world production has been on the flat plateau at the top of the curve since mid-2004, with the highest point so far occurring in mid-2008. It seems unlikely in the extreme that there will be production levels in 2019 that match those of 2008.
To give him credit, though, the talk about "peak in 10 years" is a bit of a misdirection. Further down, they get to the real peak oil story, which is the point where supply starts chronically falling short of demand:
The International Energy Agency believes peak oil will come perhaps by 2020. But it also believes that we are heading for an even earlier "oil crunch" because demand after 2010 is likely to exceed dwindling supplies.
So they are able to substitute the phrase "oil crunch" for the much scarier "peak oil," which may help get the story out there more.