If you have logged in to the new administrator in ColdFusion 8 you will notice that the additional installers links for both the ColdFusion Report builder and eclipse extensions are not working. If you want to download them you can use the following link until the project is out of beta.

http://www.adobe.com/cfusion/entitlement/index.cfm?e=labs%5Fadobecf8%5Fbeta