Guild Wars 2

I apologize if this is a repeat but I rarely look at the forums.
So if we have a existing account with GW2, all we have to do is buy/download the expansion and not have to re download GW2 again with the expansion?

when u buy the pre-purchase for the expan, u’ll get a code that you bind to your account that’ll give u access to HoT when it releases. U’ll have to download HoT, but not redownload the base game.