From Gamercast:

Modders get to your battlestations! The Skyrim Creation Kit is now officially available alongside the Skyrim High-Resolution Texture Pack.

With the Creation Kit, fans can now upload, download and install custom content officially through the Skyrim Workshop, making your all-important mod sharing so much easier than before.

The Skyrim High-Resolution Texture pack allows you to finally play Skyrim the way it was intended.

Processor: Quad-core Intel or AMD CPU
Memory: 4GB System RAM
Video Card: DirectX 9.0c compatible NVIDIA or AMD ATI video card with 1GB of RAM (Nvidia GeForce GTX 260 or higher; ATI Radeon 4890 or higher)

You can grab the texture pack from Steam, for free and the Creation Kit from the official website.