"In what may be the first significant break in the Hollywood writers’ strike,
David Letterman is pursuing a deal with the Writers Guild of America that would
allow his late-night show on CBS to return to the air in early January with the
usual complement of material from his writers, even if the strike is still on."
Letterman can do this because his show isn't owned by the network. If this deal goes through, and I think it should, that would end the strike. The networks would lose a lot too, as more shows would start to be created by outside groups that could reach their own deals with the writers.