The freebie is an update (iOS 7 UI kit to iOS 8 ). It includes system screens, navigation controls,date pickers; and iOS 8′s design, lists and lots of others.
This free iOS 8 UI kit was designed byOz Pinhas
Tags: ui,ios,,lock screen,navbar,notification center,settings,tabbar,ios 8,notification
License info: according to the author,it’s free for any use.but you can’t claim they are yours ,can’t sell them. You’ll know more details if you download the psd pack and read the readme text file.
You can download this iOS 8 UI kit free psd file from here