For any Eclipse users out there who are eager to try WLS 10.3 Technology Preview release, you should download WebLogic Server Tools for Eclipse 3.3, which has full support for WLS 10.3 TP release.

https://dev2devclub.bea.com/updates/eclipse-3.3/wls-plugins/

If you are a current user of WebLogic Server Tools v1.1, you should note that a critical patch for that release has been issued this morning to address compatibility issues with the final 10.3 TP release. To get the patch, simply use Eclipse to search for updates to the WebLogic Server Tools feature.