Truthfully I believe that they will take the guns already in fallout 3 and NV port them to 4 and add a few more...I do believe that there will be a heavy focus on energy weapons including new types of engery...I.E laser, Plasma, Gauss. But more guns will probably be added like Vietnam or WW2 era guns. Also I think weapon mod will be expanded, and there will be a COD like ADS animation or whatever will be called. that's my Idea anyone else have any other Ideas or heard any Rumors

There are practically no credible rumors about the game going around, aside from the 'all but confirmed' tidbits of it taking place in Boston and the possible return of Three Dog (spoiled by the actor himself).  

So there's no information out there about the game's weapons/items, but it would make sense that they recycle some of their guns if the game takes place in the same timeline as Fallout 3 (as Three Dog's presence suggests) or close to it.

We will more than likely see the typical classic fallout weapons and obviously see some newer ones. Maybe even "Wasteland" made weapons, as in they were made by a company that is functioning and making new types of weapons with blue prints and things like that.

Possibly more movie-based weapons like Robocop's pistol or Alien's rifles. I don't know why, but I feel like there will be many media references this time. Maybe exploded car from Mad Max randomly standing in the wasteland or something.

I have not heard the rumors. But I think you're right they outsource most of the fallout 3. It is not so bad. But definitely Bethesda add new weapons and a lot of new weapons including unique. Games sphere razshiryaetsya faster and faster, I think developers will be full of enthusiasm and inspiration. In any case, everyone will be happy) It's fallout.