I can't wait. That's really the only thing I can say. After having so much fun with BF3, 4 is just going to be the best thing ever. All it is is bigger and better, they didn't gimp anything. I know it's only the beta, but I'm downloading it and playing it as soon as I can tomorrow. I'm actually waking up early, that's how much I care. It's just....uhhhhhhhhh.
I'm personally most excited for the amount of new weapons, vehicles, and customization options. I just...can't wait.
Here's to the BF4 beta, and all it entails.