The NBC News app for Windows Phone 8 was updated today to version 1.0.1271 which adds voice commands to the user interface, closed caption support and your customary bug fixes and small tweaks.
With the voice commands you can jump to the headlines, search for content, view top stories and more.
The NBC News app not only brings you the day's top headlines from the newsroom but also videos, slideshows, and playback of the top NBC News shows (Nightly News, Dateline, The Today Show, and Meet the Press).
It should be noted that there is a Windows Phone 7.x version of the NBC News app but it does not support the voice command or close captioning. NBC News is a free app for your Windows Phone that you can find here in the Windows Phone Store.
Thanks, Robert, for the tip!