maybe it is part of FRG01b, i dont have that option on bb v0.4 which runs FRF84
My Moto Droid 2.2 does not have this feature as well..
but even before the update I had the (Contact Owner) app.
It does the same exact thing, and takes up no resources, when your screen is locked it shows the contact info you set.
Best bet until an update for the update.. lol