First, John Mangelaars, regional VP of consumer and online at Microsoft EMEA, simply said that Windows 8 will be "mind-blowing." Doesn't really reveal much, but OK, we can set our expectations to "unreasonably high" if that's how Microsoft wants to play this.
Another quote, this time from an unknown employee, tells us a little bit more:
"So what are our plans for this next version…The minimum that folks can take for granted is that the next version will be something completly different from what folks usually expect of Windows – I am simply impressed with the process that Steven has setup to listen to our customers needs and wants and get a team together than can make it happen. To actually bring together dozens and dozens of teams across Microsoft to come up with a vision for Windows.next is a process that is surreal! The themes that have been floated truly reflect what people have been looking for years and it will change the way people think about PCs and the way they use them. It is the future of PCs…"