It's not always easy to track down your files in Drive, so Google has clarified and extended the search options so you can quickly track down what you need. They've also simplified how you organize Drive files when you're previewing them.Items can now be dragged and dropped from search results or preview screens to My Drive folders, so they're easier to find next time.

More info on the Google site at http://googleappsupdates.blogspot.com/2016/01/organize-your-folders-and-files-in.html