The video was only shot at 360p, so there's not that much in the way of fine detail. But I did catch that the prototype is using FBReader for a reading app, which is a rather curious detail.
That is one of the few apps which had already been modified to run on a dual screen device. There is a version which had been customized for the Spring Design Alex after that ereader was launched in Russia. It seems likely that whichever developer who added that hack to FBReader also got to play with this smartphone, the lucky dog.