I haven't been paying attention to any "leaks" and whatnot but I have a theory about episode 3. It's titled oathbreaker, right? So I'm thinking that's when Jon is brought back to life then. My reason being is that his oath to the watch is broken now that he is dead.
If this has been discussed already...my bad lol.
Nobody has any idea what happens in episodes beyond the first, but I'm sure they'll know something by next Friday if they accidentally put the episode up in Canada again.