Yes, it is confirmed. When you use the new updated app from Box You receive 50gb free. On one account that I already had 50gb they didn't give me another 50gb, but hey, that's ok.
Download the app now to get your upgrade. I am starting to see many more cloud services offer more GB in storage. Things are looking up. Just make sure your things are secure. Don't just download any cloud service out there. Keep checking back for a list of cloud services available.