They aren't dropping support for it, they just aren't selling it anymore. The 4a just launched. The 4 will continue to get software updates. This has to do with

They aren't dropping support for it, they just aren't selling it anymore. The 4a just launched. The 4 will continue to get software updates. This has to do with supply chain constraints (and probably low sales.) Unlike Apple, not everyone controls nearly the entire chain.