If you want to know how to create and share Windows 7 themes then this post on the E7 Blog is a must read.

You can apply, create, and save themes directly from within the Personalization Control Panel in Windows 7. When you create a theme for Windows 7, Windows 7 collects desktop backgrounds, sounds, mouse pointers and icons and puts it into an .themepack file. That file can be shared and them theme can then be applied on another Windows 7 PC.

I recently took a trip up toward Steven’s Pass outside of Redmond. I took some photos of some rocks near a river on a beautiful day. I’ve created a theme for Windows 7 with those photos and called it “Rocks” and I would like to share it with you! Just click below to download the theme…

I hope you enjoy the theme!

With 25GB of free online storage on Windows Live SkyDrive, you can share quite a few Windows 7 themes with friends and family.

Some of you have noticed some changes to the Windows Experience Index in the Windows 7 Beta and have asked us to share more details about those changes. Today, you can read about those changes and how we’ve engineered the Windows Experience Index in Windows 7 in a blog post on the Engineering Windows 7 Blog. 

In Windows 7, we're introducing a brand new Windows Taskbar. I touched upon this briefly in my notes from the PDC Keynote a few weeks ago. However last Thursday, the Windows Engineering Team over on the Engineering Windows 7 Blog published a much more in-depth look at the new Windows Taskbar in Windows 7. They take a close look several new features within the new Taskbar including Jump Lists, Pinning, Interactive Grouped Thumbnails, Aero Peek, and Color Hot Track. The overall goal behind the new Windows Taskbar is to allow people to be able to manage their application windows much easier as well as give them quick access to the information they need.

If you are interested in getting a "sneak-peek" at what's coming for UI changes in Windows 7 specific to the Taskbar - definitely give this post a read.