As Microsoft released Windows 10 developer tools preview today, it included new Windows 10 for phones emulator as well. This new emulator revealed few new features in Windows 10 for phones. Right now, if you are a Lumia user, you need to install call+SMS filter app to block unwanted calls and messages. In Windows 10, you have a new appp called Block and Filter which allows you to manage blocked calls and messages. Watch the screenshots below.