A pretty stupid rumour in my opinion, if this is true, since the larger screened iphones has been a huge hit in sales and numbers have never been better. Why would they ever go back? It always amazes me just how many rumours fly over Apple products. If only they were actually still a bleeding edge company, producing firsts instead of thinking about what could have been and continue think backwards!
http://www.iphonehacks.com/2014/12/rumor-apple-launch-iphone-6s-mini-4-inch-screen-next-year.html