Yes. To quote Ben2World's reply to my question on the www.backpacker.com forums, " eVENT is not flame retardant, and certain states prohibit its use as tent material. Last year, GE -- the parent company of the maker of eVENT decided that the material will no longer be made available to tent makers for sale in any state or Canada.
Tent makers like Integral Designs stopped selling eVENT tent by the end of 2004. Big Agnes is the last seller that I know of. I am guessing that Big Anges got a 'temporary reprieve' to sell off its eVENT tents, and that deadline is probably looming fast"