The new releases (as far as I understand) are just the extended edition AND the theatrical edition on a ONE two sided DVD (I am assuming this would mean the quality is lower since the EE is on one side and the theatrical on the other. The initial release of the extended edition was on two dual layer discs, while with this release it seems the EE is squished onto one dual layer side of the DVD 18 with the theatrical on the other).
All the bonus feature are completely different from the original DVD release and the extended edition release.