Marvel has made Marvel’s Agents of S.H.I.E.L.D. merchandise available through Marvel and ABC Websites, Hot Topic, and "other specialty retailers," but it doesn’t look like any merch will hit comic stores until November.  

The line for online and specialty retail includes t-shirts, accessories, and posters. 

Comic store merch, solicited in Diamond's September Previews catalog for November delivery, includes apparel and accessories.