According to the answers Sony provided Sci-Fi Japan a little while back:
-- Sony picked up most of the HD masters from Toho recently
-- The blu-rays would be the uncut Japanese versions with Japanese and English audio tracks. The question was pretty clear here distinguishing Toho's original cuts, the international versions (specifying title overlays and English credits) and the versions Sony used for the DVDs.
-- When asked about subtitles and specifically dubtitles (including defining what these were), Sony said that "the subtitles were created from the original Japanese audio track.
And here's the link to the full Q&A list:
http://www.scifijapan.com/articles/2014 ... -blu-rays/