According to Microsoft:
"It's the next version of Windows for PCs, and it's the result of working hand-in-hand with our partners and with people who use Windows in the real world every day. We're paying particular attention to the things they're telling us are important to them and will make their PCs work the way they want them to—things like enhanced reliability, responsiveness, and faster boot and shut-down. We're also trying to make their everyday tasks easier, like connecting and syncing devices, browsing the web, and managing a home network. Of course, we're also working on new capabilities, so people will be able to do things with Windows 7 that were difficult (or perhaps impossible) to do with PCs before. Finally, we're working hard to ensure that Windows 7 will run on any PC and work with any program that works today with Windows Vista, so upgrading from Windows Vista will be easy."
According to wikipedia:
"Windows 7 is the next release of Microsoft Windows, an operating system produced by Microsoft for use on personal computers, including home and business desktops, laptops, Tablet PCs, and media center PCs. Microsoft stated in 2007 that it is planning Windows 7 development for a three-year time frame starting after the release of its predecessor, Windows Vista, but that the final release date will be determined by product quality. Unlike its predecessor, Windows 7 is intended to be an incremental upgrade with the goal of being fully compatible with existing device drivers, applications, and hardware.
Presentations given by the company in 2008 have focused on multi-touch support, a redesigned Windows Shell with a new taskbar, a home networking system called HomeGroup, and performance improvements.
Some applications that have been included with prior releases of Microsoft Windows, most notably Windows Mail, Windows Calendar, Windows Movie Maker, and Windows Photo Gallery, are no longer included with the operating system; they are instead offered separately as part of the Windows Live Essentials suite.
Windows 7 includes a number of new features, such as advances in touch, speech, and handwriting recognition, support for virtual hard disks, improved performance on multi-core processors, improved boot performance, and kernel improvements.
The taskbar has seen the biggest visual changes, where the Quick Launch toolbar has been merged with the task buttons to create an enhanced taskbar or what Microsoft internally refers to as the "Superbar". This enhanced taskbar also enables the Jump Lists feature to allow easy access to common tasks. The revamped taskbar also allows the reordering of taskbar buttons.
Screenshots have appeared demonstrating a new feature called 'Peek'. Peek is a quick way of making all visible windows transparent for a quick look at the desktop. A Microsoft spokesman said that "this will be useful for users who want a quick look at the news" in reference to RSS gadgets on the desktop."
Windows 7 touch screen demo:
I am still using XP. What OS do you use?