I have several sites that use the 5.6 release as well as half a dozen clients that I maintain for. I have not found a clear and simple explanation of the differences between the two versions or what the future holds for the 5.6 version. Will I have to convert ALL of these sites to 5.7 in the future? I am about to set up a shop on one of the sites and don't want to purchase an eCommerce add on that is not compatible with 5.7 if I will have to upgrade soon.