Yes, Corvidae, the WISC V GAI tables are different than the WISC IV tables. The values I listed were for the WISC V.

As for extended norms, they haven't been released yet for the WISC V, so they can't be calculated as of yet. However, when they are released, if you have the raw scores (not the scaled scores), you should be able to determine whether the scores change (assuming they will release the extended norm tables as well). if the raw score is very high on a subtest, it might increase the composite scores. There are some good older threads on this topic that explain it better than I do, but essentially, a higher raw score might translate into a higher scaled score.