If you don't already know. Yesterday Jan. 20, Apple released the new GarageBand 2.1, it is quite large a 1 GB download.
Also the day before on Jan 19th. iPhone iOS 9.2.1 was released. If you haven't been notified then just click on Settings > General > Software Update and it should be there waiting for. It's a 41.1 MB download. So between the download and installation it takes under 10 minutes to install the new iOS 9.2.1