Raspberry Pi 4 release on June 2019 with new performance hardware model. The price starting at $35 but you got PC-like performance.
Raspberry Pi 4 change from USB micro-B to USB-C for our power connector. This supports an extra 500mA of current, ensuring we have a full 1.2A for downstream USB devices, even under heavy CPU load. You must buy adapter 5V/3A with USB-C for Raspberry Pi 4
To accommodate dual display output within the existing board footprint, we’ve replaced the type-A (full-size) HDMI connector with a pair of type-D (micro) HDMI connectors.
Our Gigabit Ethernet magjack has moved to the top right of the board, from the bottom right, greatly simplifying PCB routing. The 4-pin Power-over-Ethernet (PoE) connector remains in the same location, so Raspberry Pi 4 remains compatible with the PoE HAT.
More information https://www.raspberrypi.org/blog/raspberry-pi-4-on-sale-now-from-35/