Don't know if it's been posted yet, but I've been freaking out (in a good way) about how much Cortana is working with WP's apps. I realized that if I update any of my interests in the Finance app, they pop up immediately in Cortana's status feed. And if I add Interests in Cortana's notebook, they also appear when I scroll to "Topics" in Bing News. Looking forward to see what she can really do in the future!