Fahrenheit EDT was first released in 1988. There have been several reformulations throughout the years, but since they are hard to pinpoint exactly, they are not separate listings on the site.
(Rumored) formulations:
1988-2002
2002
2005
2007
2011: Confirmed reformulation (via Dior sales representative)
2013: A more vanillic formula
2014: Apparently a good formulation, smelling most like the pre-2011 formula. By Francois Demachy.
For more information about different versions of Fahrenheit EDT up to 2015, check out Raiders Of The Lost Scent.
Alone in the face of the majestic elements, the Fahrenheit man incarnates a thirst for the absolute. Timeless and universal, Fahrenheit is a fragrance that transcends time and trends to forge its own territory. A unique, contrasting olfactory signature with a powerful, lingering trail. The fragrance is structured around fresh notes of mandarin, a surprising blend of masculine Wood and Leather notes, and a unique Violet accord.
‘Creativity, distinction and character: the Fahrenheit signature is unique—manly yet subtle—for men with a love of freedom.‘ – Francois Demachy