Push notifications in the iPhone app?

Are there any plans to add push notifications to the Brightkite iPhone app?

In a related question, now that push has been implemented on the iPhone, it'd be nice if I could specify a separate notification e-mail address, an address to which SMS-length notifications would be sent. I use textfree on the iPhone, which recently added push. I have an @textfree.us e-mail address, and messages sent to that address are pushed to my phone. I'd like to have notifications that I currently have sent to SMS sent to that address instead, bypassing SMS but still allowing instant notifications.

I realize that I could just change my e-mail address with Brightkite, but I'd prefer to have a separate address for the SMS-type notifications and continue to have e-mail notifications sent to my regular e-mail address.