iPhone universal inbox?

Julio Rodriguez, a fellow Apple user wrote Steve Jobs an email thanking Apple for their great customer service, and proclaiming his "life-long" customer status.

However, the interesting part for me came in the second paragraph where Julio ask Mr. Jobs:

I just have one question for you; will iPhone ever have a universal mailbox just like Mail has on my Mac?  It would be so much easier and efficient

Steve Jobs answered back in his typically terse answer form:

Yep.

Sent from my iPad

For a screenshot of the email (including headers), check it out here.