The new Raspberry Pi 3 A+ was just released, basically its a cut down version of the 3 B+.
Here is a comparison between the two.
| RPi3A+ | RPi3B+ | Difference | |
| CPU | BCM2837B0 1.4GHz | BCM2837B0 1.4GHz | Same |
| Memory | 512MB | 1GB | -512MB |
| Network | Wifi, Bluetooth | Ethernet, Wifi, Bluetooth | -Ethernet |
| Size | 65mm x 56mm | 85mm X 56mm | -20mm Shorter |
| USB Ports | 4 | 1 | -3 |
