I thought the opposite... I thought they gave away too much information. The last 5 seasons have been like "what the hell just happened???" or "What the hell is going to happen?" I left each episode feeling less and less in the know, and I kinda liked that.
NOW the question is "HOW the hell are they going to get back to the island"... because that's pretty much all they need to do now. There's no more intrigue. Just a goal that needs to be met, and Ben has 70 hours to do it. That's it, I just ruined the whole season for everyone. Kinda lame plot though, honestly.