Yesterday, Melonee Wise (co-founder and CEO of Unbounded Robotics) gave a talk at Xconomy's Robo Madness event. We were expecting to hear about how things were going with the UBR-1, and maybe some hints as to when it'll be available, but she surprised us by instead talking about PlatformBot, a prototype service robot that was apparently developed at Willow Garage in early 2012 but never released.
This was a surprise mostly because we only had a vague idea that anything like this even existed: it was certainly never public, but Wise's presentation made it clear that a huge amount of time and effort had gone in to deciding what PlatformBot was going to be, and then making it a reality.
We have no idea what happened to these robots, except that UBR-1 looks a lot like some of the concepts, which is probably not a coincidence, because the entire Unbounded Team seems to have been closely involved in the PlatformBot project before they spun out of Willow. We're actively following up on this and will have a lot more information for you in the near future, but for today, we have images and details from Wise's presentation at Xconomy.