I'm from a place that has cold winters with high humidity and chilling winds. Not even I bulk up as Geralt does on those pics.
And apparently Geralt isn't spending all his time in Skellige archipelago in Witcher 3. I never reckoned Novigrad and surrounding areas as a place of chilling winter. Witcher 3 will also take place in spring and summer like the previous titles.
I am sorry but.....only 27?

Don't know who said it, and in which thread this was said, regarding Geralt having several layers of armour.
Not to bulk up like a yeti mind you, but Geralt having plain clothes under padded armour, and then more robust armour on top of that. Not chain- or full plate mail, but like the ones he had in Witcher 2.
I for one hope for a lot of choices and customisation in armour! :yes