The images show various BB10 screens running on what appear to be BlackBerry Torch 9810 and 9860 phones. The homescreen looks fairly nice with the relatively standard set of 4x4 icons, as well as a folder which is designed much like an iOS folder with small previews of the apps inside. More interesting is the first look at BlackBerry's version of widgets, which appear to be vertically-oriented rectangles that all follow a similar design pattern with simple bits of info. We're pretty interested to see these widgets in a video (or in person of course).
Lastly, there are images of the Universal Inbox, although unlike the current BB combined inbox, it doesn't look as though this one includes SMS, just e-mail and BBM messages. There is also a nice call screen with a solid visual style to it.
We're looking forward to seeing more, but overall BlackBerry 10 isn't looking like anything revolutionary so far. It looks to be doing a fair job at catching up to the competition, but of course we can't pass judgement until we have the devices in our hands.