Well it's been online since wednesday but I didn't see anyone posting about it...unless it's somewhere else?
You can view it at the official site:
There you will also find out the winning entry in the 'Make Prime Speak' contest:
"Freedom is the right of all sentient beings."
If you already watched the trailer then watch it again because at the end where the 'Transformers' logo appear you can hear Cullen saying that line... he pronounces 'sentient' in a funny way .