"The newly expandable stories on Google News in the U.S., released today, give you greater story diversity with less clutter. Now you can easily see more content, see less of what you don't use and have a more streamlined experience," explains Google.
By default, Google uses the single column view, but you can switch to the two column view with the added benefit of going back to the old interface. Here's the new interface:
... and the classic interface:
The redesigned UI shows a single news article instead of a group of related articles. Although the cluster is still available, it's strange to see that Google hides one of the main features of Google News: grouping articles about the same topic. As Krishna Bharat, the founder of Google News, has recently said, the service "groups news articles by story, thus providing visual structure and giving users access to diverse perspectives from around the world in one place".
Power users can try Google's keyboard shortcuts (j/k for navigating to the next/previous story, o/u for expanding/collapsing a story), but most users will rarely expand stories and only click the main news article.