As someone who has no background knowledge of Dune and hasn't read the book or watched the old movie, I'm hyped for this given the director especially, but also the cast, but also the thought of a new cool sci-fi epic.
Friends I know who have read the book are very skeptical (especially towards the casting) so I'm trying to go into it with a pinch of salt not expecting it to be the best thing ever made. With that said, not knowing the source material, all that really matters to me is whether it's a good film or not, which I suppose is different to people familiar with the book who will also have that 'is it faithful to the book' criteria.