FA began reformulating flavorings to eliminate diacetyl in November, 2010. They basically finished (all but a few we now have in the e-cig line) by March, 2011. During that time, they posted the results of diacetyl tests on all flavorings that contained any. That list got shorter until it contained only their Kitchen flavors with their percents listed. Eventually they removed that data from their website. You can understand why if I give you an example.
Their Boiled Beef flavor was measured to have 0.00005% diacetyl. That is 5 parts per 10 million, which is 0.5 ppm. This was posted on their website from November 2010 until sometime after March 2011. Now, if that were a tasty-sounding flavoring like Croissant, and it was shown to have such a tiny amount of diacetyl, many people would blow off the tiny number and vape it anyway. Right? Heck, Vapor Bar is using higher concentrations in ready-to-vape, diluted eliquid as a selling point! I can see why they removed the list, to prevent misuse. I will not repost the list here when FA has chosen to remove the data from their website.
I have copies of the data posted on their website from 12-28-2010 (most flavors still containing diacetyl); January 24, 2011 (many e-cig flavors now reformulated); February 8, 2011 (mostly current kitchen flavors remaining), and reference to Max's statement that a couple others were cleared on 2/28/2011. Several of us saw Pistachio cleared of its previous 0.0015% quite recently. If you dig on Google, you can find the tables I referenced here.
One interesting observation regarding FA's testing is that they reported to the hundred-thousanth of a percent. Even a fraction of one part per million keeps the inhalation warning and remains a Kitchen only flavor. Any flavoring with ANY diacetyl (measured at least to parts per 10 million) keeps it OFF the e-cig line. All e-cig flavors measured 0 (parts per 10 million, at least).
I do not know WHY FA won't toot their own horn on this point!!