The Raspberry Pi 3 Model B+ also has faster ethernet at 300 Mbps. Additionally, it introduced an all-new Power over Ethernet (PoE) support (users need to buy a separate PoE module, though).

Otherwise, physically it's identical to the Raspberry Pi 3 Model B and Raspberry Pi 2, featuring four USB 2.0 ports, a 40-pin GPIO header, one full-size HDMI port, display and camera ports, and ...