The WOWOW does not have the CGI matte painting, but it does have more alterations then the bluray. They digitally removed a pole in the bolder sequence, removed matte lines, and "tweaked" some other shots as msycamore mentioned.

The only changes in the bluray are the removal of the glass marks in the snake pit and the new color timing. The bluray actually has the least amount of changes when compared with the HDTV's and DVD versions, although some may find the new colors hard to stomach.