T-Mobile Starts Offering the iPhone And Other News You Need to Know

Welcome to this morning's edition of "First To Know," a series in which we keep you in the know on what's happening in the digital world

Today, we're looking at three particularly interesting storiesT-Mobile has joined the rest of America’s big wireless carriers in offering the iPhone 5Microsoft has started talking publicly about its next operating system. And, as the Supreme Court hears potentially landmark arguments on the Constitution and gay marriage, lawmakers are expressing their support on social media.

Check out the video above for more on these stories

Image courtesy of Flickr/Sinchen.Lin