The Lost lips aren't particularly loose. Damon Lindelof and Carlton Cuse are, as they should be, wary of giving up information during the summer. Lost plies its trade with the tool of surprise, and anything that might ruin the surprise is a bad thing. I fully support Darlton's “radio silence” approach; spoilers for Lost are as toxic as they come. However, seeing that Lost fans are amongst the most rabid in the world, they have to talk about something during these summer months. Thus, you get excessive analysis of the minutiae. There was a piece in Michael Ausiello's first Entertainment Weekly mailbag regarding Lost that might give us some information about the final two seasons of the series. It also might be faulty conjecture. I'll let you decide.
So, here's the thing. Alan Dale and John Terry, who play Charles Widmore and Christian Shepherd, respectively, have clauses in their contracts that invite some closer inspection. They are under contract as recurring characters over the next two seasons (the same designation that they've had in previous seasons), but the Lost brass has the right to upgrade their status from “recurring” to “regular.” Even though I consider myself something of a Lost expert, there are others out there who absolutely crush me with their Lost knowledge. Specifically, there's EW's Doc Jensen, who had this to say about this somewhat curious contract clause:
“The prospect of expansive roles for Jack's maybe-dead dad and Penelope's dastardly deep-pocketed pop suggests a theory about the Island's true significance. Here is a seemingly-magical place where the lame can walk anew, the impotent can once more shoot bullets, and anyone can crank on ancient donkey wheels and leap through time. In other words, the Island provides the means for death-spooked mortals to cheat the grim reaper. I'm betting that's why Old Man Widmore is so desperate to find it. As for Ghost Dad, the Island allows him to stick around in his inexplicable spectral state and might even be facilitating a full-blown bodily resurrection; either scenario represents a violation of the natural order of things. In the end, Jack will no doubt have to convince his father — and possibly his maybe-dead half-sister Claire, too — that they need to move on. Regardless, keeping Terry around portends an emotional climax to Jack's father issue arc.”
Well, then. That's quite the insight into something seemingly innocuous. He might be on to something, but I think it's to early to know exactly how Widmore and Christian will play into the plot of the final two seasons. It would make sense that Widmore would be more heavily involved as the End of Lost approaches – he's not going to just stop searching for the island. As for Christian, I seriously doubt he's going to turn into a main character. Unless, of course, he is fully resurrected by the island. Interesting stuff, if only because there's been a dearth of Lost info of late.