IGN is reporting that Natsume's Harvest Moon title for GameCube, subtitled A Wonderful Life, as been delayed until the second half of 2003, pushed back from a second quarter release. The reason for the delay is, as you might expect, to ensure the game is of the highest quality.
Harvest Moon: A Wonderful Life is said to link up with the upcoming (and untitled) Harvest Moon on the Game Boy Advance, which will allow players to visit another town, presumably the one in the GBA version. What other link features will be in place remain to be seen, but we'll keep you updated.
Also worth noting is that (at least according to IGN) Nintendo might actually end up publishing the title themselves.