The Samsung Galaxy S5 mini is on its way for mid July according to SamMobile sources and will sport a:
4.5 inch screen,720p, a Samsung Exynos 3 Quad (Exynos 3470) SoC with a clock speed of 1.4GHz, 1.5GB of RAM, 8-megapixel rear camera, a 2.1-megapixel front-facing camera, and the usual bevy of connectivity features including LTE, Wi-Fi 802.11n, Bluetooth 4.0 LE, IR Blaster, NFC, and GPS.
On the software front, the Galaxy S5 Mini runs on Android 4.4.2 KitKat with Samsung’s latest TouchWiz UX and comes with all the software features found on its bigger brother, including Ultra Power Saving Mode, Private Mode, and Kids Mode.
Same fingerprint scanner and heart rate sensor as the full-sized model.
IP67 certified, which means it's water and dust resistant.