The voice control space is in a state of frenzy, but once again Amazon has made the next move, while its competitors are still at the drawing board – broadening its line of Echo smart speakers with the unveiling of the new-look Echo Spot and the more heavy-duty Echo Plus. The latest expansion effort comes in the same week that Google waged war on Amazon, pulling YouTube compatibility from Amazon’s Echo Show speaker, which could be interpreted as a rather sinister move, considering Google has smart home ambitions of its own. Amazon’s new spherical Spot device comes equipped with a small 2.5-inch screen, front-facing camera, upgraded microphones and a speaker, which Amazon says is best suited for bedside tables or…