Some minor changes in soundtrack choices, some very slightly different takes used compared to Part 1 and 2, and of course, the biggest most important change, they removed the bit with Bill asking Sophia about whether or not The Bride knows about BB being alive. Also, the extended anime sequence is dope.

The Fortnite "lost chapter" is also in the movie, but THANK THE MOVIE GODS it is not until after AAAAAAAAAAAAALL the credits. Do yourself a favor and skip it. Its not good. But go catch the whole bloody affair, I couldn't have been happier.