@MichelleCraig: Well, I'm on my 6th beta of iOS 10, and Siri is still pronouncing it wrong... I tried it right after I heard the Streisand interview on NPR yesterday...
She says in the interview it will be changed in a future update:
STREISAND: ...And so what did I do? I called the head of Apple, Tim Cook, and he delightfully agreed to have Siri change the pronunciation of my name, finally, with the next update on September 30th.
Updated On: 8/21/16 at 09:37 PM