However there is an arrest warrant out for him because he tried to hack the US AF decades ago and that section of charges includes crimes where the death penalty is a punishment. The charge I expect he will face will result in an 18 year stay at the US govt facility. I think he is right to think the Swedes will release him to the US where he will be found guilty and locked up for 18 years. The UK won't release him to the US because the crimes he will be charged with can result in the death penalty.
To those who say there isn't a warrant out for his arrest, there is a john doe warrant out for the author of the program strobe. He is one of the authors of that program. If he ends up in the USA, he is going to jail for a very long time.