Here's the Witcher 3: Wild Hunt "Hearts of Stone" launch trailer

OMG this looks soooo good!
Does anybody know if it's possible to play through this story if I already finished the campaign? I don't want to replay the whole thing just 'coz I think I only have one full playthrough left in me (it's a long game) and I want to save it for the second expansion (and with FO4 coming out in a month I'm not sure I'll be able to finish it anyway), but I also don't want to load the last save before the final battle - it's almost like rereading the last chapter of the book, just doesn't feel right. But I want to play this so bad! :)