The embedded type devices that I am so fond of will of course (actually) find themselves inside screens (and other digital street furniture) over time – as described in several MultiQ  posts in the past.
Sonance  also have intelligence in their screen displays and I understand that following on from the Budgen usage (Big Media Group network) their AD Series Angel Light  displays have been selected for wayfinding and for advertising at the UK’s Norwich International Airport.
There are going to be about 40 screens all together – the displays will be used to broadcast live check-in, arrivals, departures and gate information plus advertising and information.
The Angle Light displays are solid state, fanless appliances running a custom Linux build – each display is totally self-contained needing just power and IP connectivity (with no host PC or server requirement)
I also understand that the whole network may well be underwritten with (some) advertising revenue and may well deliver a return over a three year term.