Funny you should mention that- I was just about to get into it. The German girl with the best time going in came up very high in the set and began to sink down and back (loading up) and she just got killed at the start. While she was prob ready to better her 7.17pb, she ended up with 7.22 and third. The amount she lost at the start and the panicked form at the end indicated a probable capacity of 7.14 or a little better to my eyes.
Now for the recent theory of matching strides with Usain Bolt, how did that work out for Williamson? He began overstriding, trying to make a move mid-race and faultered, ending up fourth.