Reading the first post in the gaf thread, it seems like he's confused. Only two things are happening: the PSP2 and the Playstation Suite.
Playstation Suite is a games portal, like the app store, or I guess more like xna + kindle app, for all devices (initially Android and possibly others later). Same games will work on PSP2, tablets and phones. It's something that will appear on other non-Sony devices and the playstation certified thing is probably just a marketing thing.
Maybe it's just me, but Sony, a company that makes phones, cameras, tvs, home media players, alarm clocks, dildos, mp3 players, cd players, portable audio players, smart phones, android smart phones, headphones, dvd players, blu-ray players, beta players, oled tvs, hdtvs, 3d hdtvs, home audio, ebook readers, e-ink ebook readers, and video game systems also making a tablet is expected. And similar to how they brand their smart phones with bravia and cybershot, they probably want a way to distinguish it from the pack because you know it won't be as good as the Motorola Xoom or Apple iPad. But that doesn't mean it will have exclusive games. Like the iPad, it will get games from the app store. Kazunori Yamagushi won't make Gran Turismo Tablet for it, or Gran Turismo anything for another decade.