Intellisense support for WCF configuration files - February CTP
Juval Lowy has posted an updated version of the WCF configuration schema here.
If you want to have intellisence support to modify the WCF configuration files in the February CTP, you will have to download that schema and replace the existing schema in C:\Program Files\Microsoft Visual Studio 8\Xml\Schemas.
This is a temporary fix for a bug in the February CTP.