System Overload due to thousands of users grabbing the Summer Update?

I can see a Y2K happening when the download is up for grabs. What are the chances of bandwidth overload and server crash?

z0mG!@ It'5 tw3lve oh Too wh3re's t3h updat3!!1!one!1

stream technology pwn all

translation: leave it to Anet to worry about... I doubt we will have much problems at all (remember BWE? it would be something like that)

go to sleep and let all the other suckers blow up their comps, if you think that will happen. personally, i just wanna know whats there. reading is good enough for now, as my parents are @#(%*ing about games and addiction.