In this article, just after the picture of the pipboy, there's mention of 'gun nut' giving the player the ability to dual-wield weapons.
http://www.htxt.co.za/2015/08/07/fallout-4-gamescom-preview/
Is this the first mention of dual wielding in fallout 4?
Also do you think we'll be able to wield a melee weapon with a gun? Like a sword-smg combo etc.
EDIT: The article has now been edited and doesn't contain any mention of dual wielding...