If local news operations that also have iPhone apps would update their feeds more often than twice a day, TV news would be relegated to irrelevance very quickly. Frankly, the internet and iPhone are how I get the majority of my news, weather, and sports. No happy talk. And I don't have to sit through commercials, and I can "channel-flip" (look at different apps) to get different takes on the weather forecast and certain important local stories. I also have the CNN and Fox News apps, in order to get a "consensus" on the news.
I still like to watch local news on occasion, but it's not a must-have for me anymore (which is sad, because I worked in the business about 20 or so years ago).