For all those who have been waiting for this new age OS, it will be available all major territories. You will be able to download an upgrade or buy it at the store on the launch date. So it’s just a wait of 14 weeks. Microsoft has earlier said that it will offer only three versions of the OS. Two of these will be for Intel-based PCs (Windows 8 and Windows 8 Pro) and Windows 8 RT for ARM-based tablets like the Microsoft Surface.