Transformers movie - Decide a date already, sheesh!

I've seen so many advertisements and tv spots for Transformers, can't they pick a single day to open the movie? Is it 7.2.7 / 7.3.7 / 7.4.7 or what? I thought Transformers opened 7.4.7 since that's what the wallpaper dled from the site stated. Now, upon going to the official site, it says 7.2.7. Browsing through the site gives multiple dates too. GM has a huge ad campaign with the movie and states 7.3.7 on their site! IMDB goes with 7.3.7...

Just open the movie now and get it over with.