Saurik released an update for Winterboard, to make WB compatible with iPad. Winterboard allows you to customize your iPad. With Winterboard you can change icons, status bar graphics (WiFi, 3G etc.), iPad dock graphics, themes, sounds on your iPad. If you are jailbroken, you can customize your iPad with thousands of already available winterboard themes. We can expect some HD themes with in a week or soon. For detailed instructions check our sister site iPadintosh (Winterboard for iPad is Available in Cydia).
Note : Most of the stock features are working and some existing themes are reported working fine, but you may encounter weird errors with some of the themes / mods. Saurik is still working to fix random issues, so expect an update very soon.
You may want to check out our Jailbreak Guide for iPad and some other useful and interesting tips such as enabling voice control for the iPad, Mount an External Hard Drive on Your Jailbroken iPad, How to Access iPad File System via SSH on Windows Mac and so on.