While the bookies announced low odds for Nintendo announcing DVD movie playback details in this coming GDC, a Go Nintendo went straight to the source. According to Go Nintendo's post, Nintendo emailed the reader back regarding his questions about Wii-DVD. And here, by bullet point, are the details:

• While officially announced, the Big N insists it won't be unveiling any specific details about it, like release dates and price, until "somewhere in the latter half of 2007." (Nintendo already gave the "latter half of 2007" line in its original PR with Sonic Solutions)
• The DVD playback-enabled Wii will (definitely) be more expensive than the original version, though.
• And it won't be an add-on attachment. (Which may also imply that "neither" will there be add-on attachments for existing Wiis).
• Speaking of existing Wiis, Nintendo makes mention of the launch Wii as "the best (and more affordable) choice" for gamers with a DVD player at home.
  
• We here don't know whether this will translate to a two SKU production run (launch Wii and DVD Wii), although we think this means that any reference to a DVD-Wii will reside in the coming new Wii, and the launch Wii probably won't be seeing any DVD-related upgrades.