Update (11:00 AM, Monday): Nintendo has confirmed the March 14th date in a new press release.
Continuing from our previous news story, Amazon.com has just updated with the English box art for both HeartGold and SoulSilver. The images confirm the English games will contain the PokeWalker, though there wasn’t much doubt they wouldn’t. Click the thumbnails below for larger images. Seeing as Amazon posted a release date of March 14th the same day they received the official box art, it’s probably safe to assume it is the correct date, especially since it’s a month after the TCG set of the same name will be released and because previous games have also been released on Sundays.