Taking advantage of the high storage capacities available on its 64 GB and 128 GB iPhone 6 and iPhone 6 Plus models, Apple will be including the free iLife and iWork apps on those models preinstalled. The 16 GB models will still be eligible for the free apps, but users will have to download them manually, based on early word from a MacRumors source and now seconded by a separate source who provided 9to5Mac with details from Apple's internal documentation on the matter.
The preinstalled apps includes iMovie, GarageBand, Keynote, Pages, Numbers, and iTunes U, all of which are currently offered as free downloads the first time the App Store is launched on a new device.
Article Link: Apple to Preinstall iLife and iWork on Higher-Capacity iPhone 6 and 6 Plus Models