There are a couple threads on issues with seat maps right now, particularly for 747 flights. The current report (coming over here to FT from airliners.net, FWIW) is that the refit 747s won't go into scheduled service until there are three of them out of mods. (The dramatic decline in number of J seats from the old to new config makes equipment swaps much harder to deal with than on the 767-300ER upgrades where there's no change in the number of J seats.)