Peak oil WAS in 2008. It's a technical term for the maximum bump on the consumption graph. People like to pretend it's something else or that coal, shale oil, gas, biodiesel, whatever should be included but that's something else. Whether we get another peak with a sharp dropoff or a slow slide down as consumption drops due to replacement with other energy sources is something that's still being guessed at.
That's not a definition I've ever heard for peak oil. From the wiki: "Peak oil, an event based on M. King Hubbert's theory, is the point in time when the maximum rate of extraction of petroleum is reached, after which the rate of production is expected to enter terminal decline."
The problem is, is that the amount of known reserves is constantly changing, so peak oil will always be a moving target. Production, of course, has been reduced despite known reserves, to maintain prices.