Interesting turn of events to share with you guys...
Of the 3 .co's I attempted to pre-regsiter with GoDaddy, 1 domain was unsuccessful and received email notifying me of this from GoDaddy. The other 2 have been sitting in limbo, no notification either way, they both already have WHOIS records (both with other registrars and no actual ownership data), but they are no longer showing up in my Domain Manager account.
When I talked with the support rep, she said in fact to ignore the WHOIS data because the registrars are having to RESUBMIT many of the domains as there were some "issues" with the initial attempts (ie, the central .co got slammed due to volume). The resubmission will better take into account timestamps of the pre-registrations, etc.
SO.... if you still haven't heard back from GoDaddy, there is still supposedly a chance you may get your .co domains. You will know within 24 hours or so.