This particular board is a subset of the larger boards in the Beaglebone family. Boards like the Green include wifi, and the superset/parent board Black has USB host ports, HDMI output, and Ethernet connectors.

The Black has open-sourced schematics that can easily be edited into your own project. The Beaglebone design philosophy (start with this design and expand on it) is slightly different than the Raspberry Pi one (shoehorn it into whatever you are doing)... which is exciting to embedded developers but confusing to people that have only worked with the RPi.

If you want WiFi, plugging a USB WiFi stick into the PocketBeagle is very simple. (I discuss it in the article.)