From the BBC website "The app is being rolled out to Android and iOS devices in the UK this week. An app for Amazon devices is set for release within three weeks, and global editions will follow."
Also from the BBC website:
" . . . if you already have the existing BBC News app, you can update that to get the new version. (If you don't see the update straight away, don't worry - it may take a few days to reach all users)."
http://www.bbc.co.uk/news/blogs-the-editors-30917152
the new app will no longer show horizontal rows of stories representing each section, the new one shifts to a vertical design, just like most other news apps. Shame. The beeb was different.