The Origami handheld computers are a lot pricier than Microsoft expected but now the company is already taking a look at the next generation which will feature Windows Vista:
he so-called "Vistagami" devices are the successors to the Windows XP-based UMPC devices which we probably won't see out until after Microsoft's Vista operating system is launched. However, Microsoft representatives say UMPC Vista devices based on the should be ready for a simultaneous platform launch with retail desktops and notebooks.
According to News.com the Vistagami devices will require the Home Premium, Ultimate or business versions of Vista because the devices will utilize tablet features those version will have built in.