No. I posted on another thread a much more recent report on aircraft icing commissioned by the DGAC but with FAA being one of the contributors. It is in English and is a very comprehensive if not slightly scary study. It is however, long.
Peter wrote:
the most recent FAA word on “known icing”?
Yes Bell-AOPA is the last FAA legal interpretation, I am not aware of anything new?
Maybe worth looking at the definition in the AIM 7.1.20 that 2006 Letter refer to?
https://www.faa.gov/air_traffic/publications/atpubs/aim_html/chap7_section_1.html
The previous Letter was in in June 2006: “known icing conditions exist when visible moisture or high relative humidity combines with temperatures near or below freezing.” 
the FAA backtracked after pressure from AOPA & Manufacturers
https://www.govinfo.gov/content/pkg/FR-2007-04-03/pdf/07-1620.pdf
This does not mean the FAA has a light sentence, they do prosecute every single pilot who fly in actual icing conditions (observed or recently reported) that exceeds his aircraft limitation (assuming he is not dead) or cause large ATC disruption due to icing or crash & land covered with ice, this applies to FIKI & non-FIKI, the only distinction is an operational one, in FIKI you can fly in actual ice, non-FIKI you have to exit…
