The profesor sent us this about the new and improved Roomba robot vacuum cleaner: iRobot yesterday announced some new versions of our Roomba line of robotic vacuums. Cool new features include a recharging docking station and a dirt sensor, in addition to many changes to make it a more solid product. For more details see the iRobot press release. According to their website, the new version also includes a bigger dust bin that holds three times as much as the old Roomba. I've also heard that Roomba hackers may find some interesting new changes inside too. But can it still be used to deliver beer?