I was actually looking at the online manual for something yesterday and its now the first 1500km which converts to 932 miles!
One thing I've been told with new engines is to try and not labour the engine, so if you're going up an incline then maybe drop it down a gear instead of letting the revs bog down. I think the other is no high revs/thrashing.
Like others have said the main thing is varied driving, although others sometimes prefer to thrash it from day one Italian style.
Years ago people used to do an oil and filter change after the first 1000 miles, does that still happen anymore?