Henry's look was a costume and make-up test. Scars will likely be added as the series progresses, or maybe one or two beforehand. Wither 3 is a non-canon sequel to the book series, so it's an older Geralt. Henry is playing a younger, more like Witcher 1 Geralt. He has the long hair, like in the books. Less scars because this Geralt isn't as seasoned as Witcher 3 Geralt.
My hopes aren't as high as they were when Henry was cast. So far, only he, Lars Mikkelsen, and the actress playing Ciri got me excited. As for everyone else, I'll have to wait and see them in promo pictures or a trailer.