Yeah, it's still American Zoetrope. The only difference in terms of credits is the new Warner Bros logo at the beginning, which is funny since the old logo is still there right afterward.
Like I said, there's no copyright for anyone besides Warner Brothers. At worst, they signed a deal with Lucas not to include the original. At best, they simply didn't include it in the dvd/blu-ray because of the restoration and remastering required. Who knows.