The articles don't mention "rebooting" Superman in the sense of retelling -- yet again -- the Superman origin story, nor do they say they'll recast Superman as someone other than Brandon Routh. They just say they'll position the character differently. I.e., they may just start the next film off with something terrible happening and Superman flies in and does some action stuff and saves the day. It could tie in to SR in general, superficial terms, while changing the storytelling enough to be an entirely new take. I think they'd be best off ignoring the inner story of Superman, because it is evident from Superman Returns that people don't like an inner story going on with Superman (I did!), and yet by the same token any film with Superman as just an invincible superhero needs to be careful, because Superman without an inner story is inherently an incredibly bland character, since he has no weaknesses, faces no real obstacles, has no moral crises, and just generally has only one character flaw which is he has trouble dating.