Google unveils Nexus phones with 'Marshmallow' flavor

SAN FRANCISCO — Google is countering the release of Apple's latest iPhones with two devices running on a new version of Android software designed to steer and document even more of its users' lives. The Nexus 6P and Nexus 5X unveiled Tuesday are the first smartphones sold with an Android upgrade called "Marshmallow." It features changes that will give expanded powers to Android's personal assistant, Google Now, so it can explore the information that people call up in the mobile applications. Previously, Google Now learned about its users' interests and daily habits by analyzing search requests and scanning information contained in emails. The Marshmallow version...