I don't remember hearing about new weapons, but in any case all weapons received a major rebalancing.The Director's Cut will include new weapons and armour and the possibility to switch on/off the visuals and be able to see characters in their actual equipped armour?
I remember a lack of diversity in backpacks also.
We know that armor visuals are in - whether forced or optional, I'm not actually sure. It's possible it might be forced, but I doubt it as this would do away with the gorillas suits and Amigos costumes. So I believe it will be optional as you suggest.
Yeah, there were like 6 backpacks in the original version. I can't imagine that they wouldn't make a bunch more for the DC.