What you're looking at is a holiday card from the good folks at Zagato featuring the full Alfa Romeo TZ family. Starting from the back, there's the original TZ1, followed by the classic TZ2, the most recent TZ3 Corsa unveiled at Villa d'Este and, what's that wrapped in a bow, a fourth TZ model?
This is the first indication we've had of such a model in the works, but from what we can see in the image above, it looks promising, blending the aforementioned Z-One and 8C together into one tempting shape. Logic would dictate that the fourth model will carry the TZ4 nameplate. If it's real, it's likely to have been commissioned by some wealthy client, and probably borrows its underpinnings from the 8C Competizione. Whatever it is, color us intrigued, so watch this space for more details as they become available.