So there you go, no Google Picasa library support for you! Picasa's facial recognition feature was launched in September 2008, four months before Apple introduced support for facial recognition in iPhoto '09 with the release of the iLife '09 suite in January 2009.
An interesting note on the email: 9to5Mac posts the entire header information confirming that the email is in fact from Steve Jobs and was sent from his iPhone. The header information reveals that Steve hasn't upgraded to the latest iPhone OS. He's still using 3.1.2.