Config 3 planes at Gatwick

We are off on Saturday to Jamaica on Saturday and our seating map is still showing a config 3 plane.
Have these all changed to config 4 now?
Just wondering as the map will probably change at OLCI...may have to slip away at work to do OLCI as soon as it opens to try to keep the seats that we have requested?

[Neil]

There is some confusion if all LHR 747's are now in config 4, or still some in config 3. It doesn't seem to affect any seat reservations, as the rear section on both configs always seems to be blocked out.

It would be good if we could get some clarification on this.

when we reserved the seats 11 months ago, we reserved the 2 x 2 at the rear, which is why we wanted to try to keep them?