I don't think they will be real apps, more like... some background services or something like that. Remember those screenshots were from a very early build with even placeholder icons.
Now, they should kill the Contacts app (we have the phone app for that), Game Centre and merge the Compass app to Maps.
Apps are most successful when they're focused on doing one simple thing... going through submenus to get to different functions is time consuming.
Look at instagram vs facebook. With facebook, you have a lot of shiz going on in one app. With instagram, it's very focused. Take a photo, share a photo, see shared photos (and I guess now video, too). That's why the app got so insanely successful so quickly. You could still share photos on facebook, but as the exp is so fragmented, it's not as successful.
Same reason why foursquare is separating it's services into diff apps and getting a lot of praise for it.
While I agree with you that contacts app is a bit redundant (especially considering that it's built into spotlight too), compass in maps and combining other apps would make the user experience more frustrating for most users imo.