I guess Oracle was not happy that this was communicated before April 22nd. The link now is withdrawn!
Sorry Guys, we need to wait again until April 22nd
New Features In Oracle Enterprise Manager 11g Grid Control Release 1 can be found over here:
http://download.oracle.com/docs/cd/E11857_01/em.111/e11982/whats_new.htm#CHDCIDIG