Mark, Greg - We will support "all in focus" sometime after we ship:
lfeldman - "the Flash demonstrations on your website and others only allow focusing at two points": Not really. What's going on is that the pictures you are playing around with are web optimized versions of the light field file. The amount of depth information that was captured -- which is based on the skill of the photographer's 3D compositions as much as camera itself -- will result in more or less refocusability and thus more or less refocus points. Note that some of our web gallery pictures have 5 or more focus points.
The original file has all the light field information in it; as a result, it's pretty big (about 16MB) and would be an unwieldy beast to share.
"When you release your cameras, will your software be able to focus at any arbitrary point in the image" - Yes, you'll be able to do this on the Lytro Desktop software. But again, there is skill and learning involved; if you take a picture at 1x zoom, and your near subject is 5 feet away, they are effectively at infinity as far as we are concerned. There will be very little depth (and therefore refocusability) in such a picture.
A great lightfield photo at 1x will have your near subject about 4-6 inches away.