Looks like CineMassive Displays, or a serious fan, setup a video of their MasterPlex on YouTube.
I would pitch the displays down and in more to get a better wrap around feel but that combination of screen sizes and orientations seems really practical. 21.3" in the center with portrait wings...
I picked this up from <a href="http://www.cinemassivedisplays.com">CineMassive Displays</a> Definitely get's the job done. I don't have a photo handy, but the one from their site is pretty accurate.