The Raspberry Pi 3 Model B+ is a product in the Raspberry Pi3 range, boasting a 64-Bit quad core processor running at 1.4GHz, dual band 2.4GHz / 5.0GHz wireless, Bluetooth 4.2/BLE, faster Ethernet and PoE capability via a separate PoE HAT. 
 
Broadcom processor - BCM2837B0, Cortex 64-bit SoC @1.4GHz
2.4GHz and 5GHz IEEE 802.11.b/g/n/ac wireless LAN, Bluetooth 4.2/BLE
Improved thermal management
Faster Ethernet (Gigabit Ethernet over USB 2.0, maximum throughput of 300Mbps)
Power over Ethernet (PoE) enabled RJ45 giving PoE capability via new PoE HAT
1GB RAM
40-pin Extended GPIO
4x USB 2 ports
4 Pole stereo output and composite video port
Full size HDMI
CSI camera port for connecting a Raspberry Pi camera
DSI display port for connecting a Raspberry Pi touchscreen display
Micro SD port for loading your operating system and storing data