Microsoft has released Windows 8 Developer Preview. You can directly download it and try your hands on this new edition. No additional hardware will be required for normal functionality, means if your are running Windows 7 or Windows Vista, you can also run Windows 8. Since this is Developer Preview Edition, it doesn't support upgrading from older versions.

Microsoft has announced that its upcoming operating system, Windows 8, will offer native USB 3.0 support. In the results coming till now, USB 3.0 is 10 times faster than USB 2.0, can offer speed upto 5 Gbps. There is no doubt, how we are addicted to use USB devices at present, but the question is, till the release of Windows 8, will hardware support be available...