DVD-A and SACD will not be the death of redbook. These formats are only appriciated by a small community. It's going to take a format that is embraced by the mainstream buyer to kill redbook. If it were not for the legal crackdown, MP3 would be the most likely candidate. Redbook will die when the record companies come up with a secure compressed format that can be downloaded via internet, or over the air (XM, cell phone, etc). Within 10 yrs your entire music collection will be on a credit card sized device that you will carry with you in your wallet. Something like that would kill redbook.
But then again what do I know....
But then again what do I know....