This Twitter user says so.

The Zune Marketplace looks like it’s been formatted to match the new device pretty well.

The user’s Twitter profile says he’s a developer for the Xbox 360, which could easily explain why he has a device to play with. (Of course, it also explains why he’d say it’s “awesome”.)

I wonder if they’ve fixed the main menu item for “marketplace” so the “e” is no longer cut off.