No you don't. You will only need internet for patches and DLC.
...people still turn off their connections?
I do because people on my PS friend list are annoying . I can't log on without getting a message or invite to play GTA Online. Even if I'm not playing GTA and I tell them I'm not playing GTA that day I still get 10 invites for GTA.
I have no idea. I can't seem to find one article stating a positive yes or no about consoles. The only article claiming that it won't is basing that simply on the fact that it ships for console on Bluray.. but that really doesn't prove anything. That just means the entire game could be on the disc.. it doesn't mean that it doesn't require internet to activate.
I personally think that it won't require an internet activation but I can't say for certain.
Is it confirmed that there will be a day one patch?
@topic
Most likely not. The whole game will be on the disc, so there's no need to download something. I mean how stupid would that be? You might as well just buy it on PC then if you have to download shi.t for hours and hours
I hope so. If there isn't that means a month less bugfixing than we would otherwise have had.