
On Tuesday, at PDC, Microsoft made an API-complete, pre-beta version of Windows 7 (also known as "Milestone 3") available to attendees and press, as expected. While there was no further information on an exact release date, in a keynote address, Steven Sinofsky, Microsoft's senior vice president of Windows and Windows Live, said that the first public beta of the OS will be available early next year.
The Windows 7 beta will be followed by test releases and release candidates that incorporate feedback from end users.
All software and hardware that works with Windows Vista will work with Windows 7, because the operating system kernel is the same as the one in Vista and Windows Server 2008, said Sinsofsky.
He added:
"All of this device and compatibility work will pay off in Windows 7."
Basically he's saying, all the hard work necessary to get the compatibility issues with Windows Vista ironed out finally make its mark by making Windows 7 compatibility seamless.
While not saying that UAC and its pop-ups messages will disappear, which would be my wish, Sinofsky indicated that the UAC in Windows 7 would annoy users a heck of a lot less. Users will be able to set how frequently the pop-ups appear, in a range from "always" to "never." Hopefully "never" will be the default (unlikely).
Windows 7 will also sport touch-screen technology, though naturally not every PC will come with such. This tech will gain the name "fingertip computing," and when a user touches the screen the mouse arrow will disappear, and you will see a tiny wave-like image in its place, surrounding your finger and indicating where you are touching.
Sounds kind of like the effect invoked by surface tension on some surfaces when you place your finger on them.
Paint, WordPad, and Calculator, those applets that have been around since the earliest versions of Windows are getting refreshed, with both
Paint and
WordPad getting the Ribbon (no!), and
Calculator getting history, unit conversion, calculation templates, and date calculations.
More tweaks: the Taskbar gets streamlined. Users can drag buttons and place them where they want on the Taskbar (ever groan over an obsessive displeasure with the Taskbar button location on your Taskbar?). They can also be pinned = no need for a Quick Launch area. There's also a small button at the far right of the Taskbar that lets you "peek" at the desktop, or just show it (click above to see "peeking").

Microsoft has added "Jump Lists" to the Taskbar and Start Menu, which pop out whenever you hover over an app's Taskbar or Start Menu button, and display "contextualized tasks." These are usually the most recent used documents or tasks for the app.
And, a lot of the dross is being removed. It has to be, if Windows 7 is going to run on a netbook, which was demonstrated at PDC when Sinofsky held up his own personal "unnamed" netbook with 1 GB of RAM and half of it still available after boot.
Sinofsky said Microsoft has worked on decreasing memory requirements, disk I/O, and power usage, while at the same time increasing speed, responsiveness and scale (Windows 7 will support up to 256 CPUs).
There are tons of other changes, but somehow the more Windows OSes I see, the more similarities I see, and the less impressed I am. Even with XP to Vista, I said it was pretty evolutionary, and this seems the same here.
I think that the word "changes" is the reason. I seem to compare a new OS to an old one and see it as a change from an earlier one. Of course, when you maintain even the registry hacks that existed in a prior OS (such as XP to Vista), it's hard to discount that opinion.
Still, in mid-October, Steve Ballmer
said Windows 7 was going to be "Windows Vista, but a lot better." It seems that Microsoft will do its best to make that happen. Still much, much more to come.