I think it's not a reboot of the Arnold films. It's a new movie based on a character created by Robert E. Howard that already existed before Arnold was born. All those who think Arnold is the only one who deserves to be Conan don't like Conan at all, they just like Arnold.
I'm a hughe fan of Conan as a character not just Arnold's Conan. I remember when I first watched at
Conan the Barbarian movie I didn't like it at all. I had read comics since I was a kid and
Conan the Barbarian was neither similar to what I used to know about Conan. Later I realized it was a good adventures film but nothing in common with Howard's books or Roy Thomas' comic-books. Conan didn't grow on a wheel of pain, he grew hunting animals and battling Gunderians and Aquilonians until he was 17 then he left his village seeking adventures.
Also, Conan is bulky, but not as much as Arnold was. Somebody with the muscles of Arnold wouldn't be able to fight and handle a sword with the agility and skill of Conan.
Hope this movie reflects Howard's books better than John Millius one, so I'm excited and I can't wait to see it!!!
*Excuse my english, I'm spaniard