While showing off its latest Pixel phones at its yearly hardware debut, Google also announced the first fruit of its union with Fitbit: the new Pixel Watch. This device has been highly anticipated, because not only is it the first Fitbit device to fully benefit from Google’s software, it’s the first device powered by the Wear 3.0 OS to come from a manufacturer other than Samsung. The Pixel Watch launches on October 13th for $349 ($399 for an LTE version), and it’s up for pre-order now. The Pixel Watch effectively has two identities. It’s both the flagship for Google’s latest refresh of its wea…