Your bigger sibling 9000 users and cousin 8900 users have been getting some Windows Phone 7 theme action for a few weeks now, and I would deem it inappropriate if the rest of the family didn't get into the action as well! Here's a preview of what you'll be seeing once you OT that A:
So please, come on over the 9000 forums and have a looksie! Changelog/updates are all written there (red for most recent) and please let me know what you think! This has been tested on the 5.0 Simulator (as I do not own a 9700) so if things don't translate perfectly onto your phone, please do give me a shout!