These figures are also subject to revision in light of subsequent data. (rba.gov.au)
Ads may use internet connectivity, and therefore subsequent data charges may apply. (andyemulator.com)
After reviewing the Levitus et al 2008 papers abstract, (as I do not have access to the paper it's self), I assumed that the data you were referring to was based on some earlier data sets which seemed to demonstrate a ever increasing distributed localized temperature swing, when subsequent data, as indicated in the Levitus et al 2008 suggests a systemic imbalance of oceanic heat content increase in the range of a 0.31 Deg. (realclimate.org)