They're not home - yet - in Season 4 of Battlestar Galactica

Many spoilers here, so if you're watching "Battlestar Galactica" and don't want to know how it turns out in Season 4 stop reading - but we're now at the end of part one of Season 4 and the human race and the Cylons have formed an uneasy alliance and have found earth - and landed - only to see the landscape as a postnuclear ruin. Just amazingly haunting scenes at the end of this half-season, with the characters on a beach and charred ruins all around them and, across a harbor or channel, the ruins of a city, perhaps Manhattan. The planet looked beautiful from above, but not on the ground. At this point, it's unknown whether there are any living inhabitants - human or otherwise - on Earth. The dire disappointment of this discovery could break apart the alliance - or maybe it was a Cylon trick, maybe they led the humans to a false earth? Or maybe it has something to do with the "jumps" and the time barriers, maybe they will be able to jump back to an earlier time and try to avert the holocaust? Or just to blend in? We still don't know how Kara/Starbuck could have seemingly risen from the dead to come back from Earth, nor how her fighter plane could have been restored to pristine condition - must have something to do with time travel. And what about the prophecy that the leader - President Roslin - would die "of a wasting disease" before she could lead her people to Earth? Something tells me they're not home - yet.