As part of the R&D work on port! datatype in port-type branch, we have implemented a GPIO driver for Raspberry Pi boards, as a gpio:// scheme (no third-party library needed). This work helped define the low-level API for ports written in purely Red/System or a mix of Red and Red/System. The Raspberry Pi is a very popular board with millions of units sold, so this is a market where Red could be potentially helpful to developers.
If you are an active member of the Red community, you will have likely been keeping track of Red's progress through our Gitter rooms and Github repositories, but we wanted to officially bring everyone up to speed with a shiny new blog post. The team has been busy since January on many fronts, multiplexing its efforts on many different branches of development. Here is an overview of what we have been cooking and what is coming.