It is OUT NOW!
Part 1 starts with Gary and Dee on a date and Gary takes her home and he shoots her with his growth ray(This happens early on 1:28) and after that it is all action starting with an Alice in wonderland inspired growth scene then the last 5min is her walking around in the city crushing people, cars and eating a person. I included all of it in the Gif Slideshow.
If you Pre ordered just go back into your account and download it again. The filename will be same as pre order file so delete or move pre order file. The file is 400mb