The '08 exclusives as they are , are more than enough for a years worth. combined with multi-plats and the PS3's signifcantly more value to it's name.
I'd say Sony's management are pretty active , well they'd need to be to co-ordinate the release , promotion , implementation of Home , PS3's exclusives , In Game XMB , Developer Support , PSP projects aswell as many other well known and secret projects they've got going on.
I'd say they're pretty busy.