The Enterprise can now maneuver in an atmosphere with ease. It's as handy as a helicopter.
Kirk is portrayed as an incompetent who is ultimately responsible for all the deaths in San Francisco.
The "Transwarp transporter" is back which means starships are definitely obsolete, in case that wasn't clear from the last movie.
Khan has somehow become and English white guy.
Death itself has been conquered with Khan's magic blood.
There's lots more but these are the highlights for me. What a piece of crap.
Full review is HERE.