For your convenience the links to the announcement and the new form are listed below:

• The link to NIH's notice about the new PHS 398 version 04/06 can be found at : http://grants.nih.gov/grants/guide/notice-files/NOT-OD-06-056.html 
•  The notice about the accompanying PHS 2590 is at :  http://grants.nih.gov/grants/guide/notice-files/NOT-OD-06-058.html
• The link to NIH's actual forms can be found at :  http://grants.nih.gov/grants/funding/phs398/phs398.html 

You must scroll down  to see the text in red describing the 4/2006 revison