From Spoilerfix
General Spoiler
04/18 - I'm told there will be at least five deaths on Lost during the month of May. Source: Ask Ausiello @ TV Guide
Next Weeks Spoilers
Episode 3.18: D.O.C. (Jin/Sun-centric)
Airdate: April 25, 2007
04/17 - Lost Spoilers offers us a summary of the spoilers Cuse and Lindelof revealed in the latest podcast: D.O.C. will take us back to the death-of-pregnant-women storyline. Source: Lost Podcasts
04/09 - After discovering that all of "The Others'" pregnant women died before giving birth on the island, an extremely reticent Sun allows Juliet to examine her -- and uncovers the identity of the unborn child's father. Meanwhile, Desmond allows an unlikely nemesis to help save the life of a new, mysterious island inhabitant. Guest starring are Byron Chung as Mr. Paik, Andrew Divoff as Mikhail, Marsha Thomason as Naomi, John Shin as Mr. Kwon, Alexis Rhee as older woman, Esmond Chung as Paik's associate and Jean Chung as Paik's secretary. Source: ABC
04/08 - After learning that the Others' pregnant women all died before giving birth on the island, Sun allows Juliet to examine her; Desmond allows an unlikely nemesis to help save the life of a new, mysterious island inhabitant. Source: WCHS
04/08 - I'm told the initials in the title stand for "date of conception." Source: Kristin on E!Online
03/30 - Edward Kitsis and Adam Horowitz reveal: Sun is going to learn interesting things about what happens to pregnant women on the island and when she does learn these things, it's going to impact her relationship with Jin in a profound way. We will find out that Sun has a secret feat that she is hiding from Jin, and that will not only be voiced, but answered. [During the Jin and Sun flashback,] you will get a taste of them as newlyweds and kind of see where he was before he started to be Mr. Paik's head henchmen. Source: Lost - The Official Magazine, Issue #10, May/June 2007
03/11 - Lost was filming in downtown Honolulu again, this time near Chinatown. They set up along College Walk and North Kukui St., near a Taoist temple and within view of assorted Asian architecture. It was along the river, or canal, that borders downtown. They were filming a busy street scene with background extras crossing a bridge, including a cop in a blue shirt and a white hat. Pigeons scattered on cue. The focus of the scene was Yunjin Kim, or "Sun." She approaches a middle aged Asian woman leaning against the low wall of the canal. Sun pulls an envelope out of her bag, and hands it to the woman. The woman eagerly starts to open in, but Sun clamps it closed. They talk. Sun pushes the envelope sternly into the woman's hands, turns, and walks away. Source: The Transmission [Note: Pictures can be seen here.]