Highly recommend you read this dpreview article, “Lytro’s Ren Ng sheds some light on the company’s ambitions“. Here is an excerpt,
“Lytro’s announcement that it will be launching a plenoptic ‘light field’ camera that allows images to be re-focused after they’ve been taken, was met with equal amounts of interest and skepticism. Interested to find out more, we spoke to the company’s founder and CEO, Ren Ng, to hear just what he has planned and how far towards a product the company has got.”
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Sept 7, 2011 update: Reuters video interview, “California company brings sharper focus to photography”