I just renewed after missing a couple of limited time offers that they had sent me after my subscription ran out last spring. Their offer is for 2 years (12 issues) at close to 60 percent off the cover price. I have to assume that it's still six issues a year. Below a bunch of stuff on that same page, they have a 100% Money-Back Guarantee if, for any reason, your dissatisfied with your subscription, they'll send you a full refund for all unserved issues in your current subscription.
I left the price out above on purpose so it wouldn't come across too much as advertizing, but they do have 2 years (12 issues) written.
Eastern Fly Fishing magazine used to be bi-monthly before this year, then they went to quarterly. Tough times for magazines.