Cortana now has an updated chat-based user interface where you can type or click on the microphone button to speak requests in natural language. With Cortana in Windows you can use Bing Answers and chat with Cortana to find local information, and keep track of the latest news, weather, and finance updates.
You must now be logged in with your work or school account or your Microsoft account before using Cortana. Cortana is now store updatable so you can look forward to seeing new features and productivity scenarios becoming available in future updates.