Well, it is safe to say they have their work cut out. Right now DRM is linked to a very specific publication key, and those go back a ways. But today, they need a new, more open system. I know they've been working on this, but I don't know how far they got. Clearly though right now PSP and PS1 games are produced with different DRM, which prevents them from being linked. Of course, there is also the likelyhood that not all publishers allow republishing on new platforms without addiitional money being handed over (remember this even sometimes had to be done when DLC transfers to a new version of the same game on the same platform, like Rockband 1 -> 2, etc.)
They'll either have to move to, or re-release, content that was on PSN and now moves to PSSuite, and how they connect that to pre-existing purchases remains to be seen. But there is at least a chance that content purchased in the future will be available to you on all your PSSuite capable devices (though with some kind of activation limit no doubt, like two Android devices, two Vitas, and two PS3s for instance). Pretty complicated stuff.
They are definitely doing something serious with the store though. I haven't been able to access my PSN Store history yet since the last maintenance.