Yes, I also posted it in /r/Bitcoin.
I love WP8, but there's no bitcoin client available for it. So I decided to build one.
Do you have any specific feature requests or design concerns?
I'm still wondering if I should:
- make the balance visible at all time
- only show a single currency at once (with a toggle button)
- show full bitcoin address in the transaction list
- change the date to "X time ago"
- add "send" and "receive" in the pivot control
- duplicate the QR code in a sperate "receive" page
- make it easy to use multiple wallet/public keys, or keep it simple with a single one
- etc.