We have heard a bit about them doing a pilot in Kenya, possibly with a university.
When I looked over the design, they offered a distributed network of devices to get copies of content into devices in each of the classrooms to provide fast, simultaneous access to all content in a number of classrooms. It would see to me that they are working on a theoretical problem
I am dreaming about a university in Africa with so much actual usage that it will overload a RACHEL-Plus 2.0 connected to a Gigabit wired LAN with remote PoE WifFi access, especially with WiFi turned off on the RACHEL-Plus 2.0. When I reach that point, I expect to find a room to install a nice redundant, rack mounted server with a couple hours of battery back-up for the servers and the PoE access points.
By the way, we are always eager to find deployments with high usage. My highest was almost 40 Kio Kit tablets with girls so wrapped up in KA-Lite Math exercises that we had to turn of the server to get them to go to lunch.