I believe if you look at the renders you'll see the android OS running of course, however if you look closely you'll see some apps on the home screen have a little suitcase logo in the one corner(Webex and canada post). I propose that I believe these to be BB10 apps, that will run in a container when opened much like the BB10 android run time. Perhaps what we're seeing here is the reverse runtime scenario for this slider.
I really doubt they'd use the Apps for Work identifier for BB10 apps. Moreover, the point of having Android apps work on BB10 was that developers didn't get on board with the platform. I don't see the benefit to having BB10 compatibility on Android when there are so few worthwhile apps. Even then, the good apps have better supported counterparts on Android.
BB10 can have apps like Blend and, if Thor and Mike had their way, do things like distributed computing. BB10 apps should therefore be better than Android apps. But, the theory meets a difficult reality in that BlackBerry pretty much abandoned BB10 ecosystem development after Chen arrived. Hard to build a platform with higher quality apps if... you don't even try. Also, new APIs and cool stuff just stalled. Chen either didn't get it OR just sucks at building platforms.
But, I'd want to run some of my Nemory apps and BlackBerry Express and Blend and such on the slider...