Skyrim - Creation Kit and High Res Pack Texture Released

Bethesda today released the Creation Kit via Steam. An excerpt:

Now you can easily discover, rate, and download Skyrim mods directly through Steam. The Steam Workshop makes it easy to browse the most popular, newest or highest-rated mods of all time, as well as searching for specific content via tags such as “Armor”, “Quests”, “Dungeons”, and more. You can even see what your friends have added to their favorites. Once you’ve found something awesome, click the “Subscribe” button. Be sure to check the mod description for any special instructions, such as which NPC starts a quest, or how to acquire new items. The next time you play Skyrim, the launcher will automatically install the latest version of any subscribed mods and configure Skyrim to run them.

They've also released the High Resolution Texture Pack via Steam.
A sample from the announcement:

Experience The Elder Scrolls V: Skyrim as you’ve never seen it before with the Skyrim High-Resolution Texture Pack. Make sure your system requirements exceed Skyrim’s recommended specs before attempting to install, including Windows Vista or 7 operating system, a minimum of 4GB of system RAM and a DirectX 9.0c compatible NVIDIA or AMD ATI video card with at least 1 GB of RAM and the latest drivers.

A tutorial on how to make mods and upload them on the Steam Workshop for this game can be found at the Beth blog.  A sample:

The difficult part, of course, is creating your mod. To get started modding, install the Creation Kit — free through Steam to all Skyrim owners — from the Tools section of your Steam Library. The Creation Kit is a powerful and sometimes daunting tool, but the community wiki at www.CreationKit.com is a resource for modders of all skill levels, even the total beginner. When you’re ready to share your work with the world, simply choose “Upload plugin and archive to Steam” from the File menu within the Creation Kit. Here you’ll be prompted to choose a name for your mod, as well as any description, content tags and thumbnails. The Creation Kit will notify you once the mod has successfully been uploaded to Steam.