If you are sick of having upgrade every year to get a faster processor and like to Do-it-Yourself, project ARA from Motorola is going to great be an option to save the world from e-waste.
Project ARA will make smartphones more customizable than the Moto X with blocks/modules that you can put together on an endoskeleton. Motorola is going to make the project open source and work with Dave Hakken, creator of Phonebloks. Modules can be a new processor, display, keyboard or sensor.