Fortunately those 747-8s (assuming that is what it was, I guess they still had a few 400s in the fleet) will probably be around for a while. It's a shame Boeing didn't get more orders, those are sweet.
The ones that were grounded this month were all 400's. They retired their last non-400's in 2002 (those were 200's).
Interestingly the three bookings I have with BA for October/November/December all still list 747's for my outbound longhaul flight...they haven't gotten round to redeploying aircraft for these dates I guess.