Hi Jonathan -- I'm the Group Program Manager for Photosynth. At the moment we don't have a shrink-wrapped standalone product in the plans. But, we are very close (weeks) to releasing a business license for Photosynth. This will not be for a shrink-wrapped product -- it will be for businesses who want to use Photosynth online at high traffic volumes, and/or want to control where the synth is displayed.
I'm very interestd in helping small businesses form around the Photosynth technology. If you would like to discuss your needs, my Photosynth profile has my email address.
Thanks very much,