Yes sir. They just started dating there products in 09. I am still using 09's this year.
They claim on their package that the effectiveness drops slightly for the next years hunting season. I cant tell a difference.
I dont know if this was a marketing tactic to date them or not but I have used bottles up to 2 years old and still had a positive reponse when bucks came in close. They still noticed my doe in heat scent just fine.