I got the free one...don't remember getting a coupon though, and it seems like it came sooner than 6 weeks..
The greenies are new and improved, I always kept giving mine the old ones when they had them, I had never had a problem, the new ones won't hurt them, they dissolve, to where the old ones didn't. The only thing I don't like, is they don't last as long..

the lil bites) are the crushed ones, those can be given to dogs under 5 lbs., although I give mine the teenies now, used to give them petites. the lil bites I give to my puppies as they can't have the teenies until over 5 lbs or such and such and age..