"They never cease to amaze me with what they’re able to come up with, you know? I said, 'How are you ever gonna top R2-D2, the most adorable droid in movie history?'" ―Mark Hamill on BB-8
Once again dont know mutch other then what we know from lego is that he is Poe deamon's droid co-piloting his X-wing and that he was on tatooine at one point in the trailer. More info might have spoilers http://starwars.wikia.com/wiki/BB-8
This works exactly the same as paperboy's (i mean MAN's) wheatley
PS no spoilers in comments
PS big thx for aleinliomo (did i spell that right) for the photo
1. Click on the papercraft design image.
2. Make sure it has not been resized by your browser (you might need to click the image again).
3. Print using your browser's Print function.