Most of the apps on Cydia have not been updated yet. As far as I can tell, besides maybe Activator only f.lux and SwipeSelecton work. SBS will not successfully install on my iPad no matter how many times it completes the download. Nitrous has supposedly been updated but will not install either, no way of paying for it even when logged in. So this JB is kind of a waste of time right now, until the featured apps get updated for it (if ever.) Makes me appreciate the App Store in comparison.
Edit: Wow, SBS finally installed after only about three dozen attempts. But it only works in Portrait mode now, used to work in Landscape on my original iPad. Funny but it remembered all my old Dock items.