Bicycling comes out once a month. The news stand on sale dates for the fall/winter are 8/5, 9/9, 10/7, 11/4, and 12/9. Subscription copies should be mailed a little earlier than these dates.
I feel that much of what they cover in the articles and product reviews is heavily swayed by their advertisers and I would not consider it to be an objective source for information relating to bikes/accessories. For free I read it every month but I'm not sure I'd pay to subscribe.
I work in the magazine industry.