The latest AI-powered upgrade for Google Photos brings four tricks. In a blog post today, we learned about four new features for the service, including the simplest one, which autodetects sideways pictures and prompts you to correct them. Two others dig into its talent for facial recognition, as it will detect people in your new photos, and offer to "rediscover old memories" of those same people in older pics, or, it can pop up a highlight reel showcasing the best pictures of a frequent subject.