I'm getting basically the same e-mail behavior with this release (1006) as the last release (1005).
I can get texts, but e-mails show up in the "Current Office" screen in the texts count. E-mail count is always zero. E-mails do show as e-mail in the message list though.
I can receive e-mails, but I still have to change the number of unread items in the iPhone mail notification screen after turning the car on in order for subsequent e-mails to be received. This may be more of an IOS issue than BMW, but I don't know for sure.
The car still does not show previously received texts or e-mails; same as before (not that I was expecting that to change...)
Anyone have any better luck than me? I'm still not positive that I have all of the settings right in both the iPhone and the car.