Fastest women's IM times - EVER

Were the Roth times this year from Chrissie and Rebekah the fastest IM finishes of all time? Or have others been any faster?
Is it…?
Chrissie Wellington 8:31
Rebekah Keat 8:39
Vyonne Van Vlerken 8:45

There was a good article in Triathlete magazine last year. It noted that Paula Newby Fraser held an unofficial record for years, until Yvonne Van Vlerken broke it at Roth last year. Then the ones you listed below, broke that record, this year.

There was good discussion in that article about whether Roth was the official distance or was it just a fast course.

Roth bike is smack on the distance (according to my usually reliable bike computer). Swim seems very close ( I checked on my bike riding on the tow path the course), haven’t checked all the run but at least the first 3 and last 3 kilometres are exact (measured as I was running an experiment there this year).