A brand new teaser site for Battlefield 4 is as steamy as that scene from Titanic. No, not the bit with the iceberg, that car scene... look, it's a steamed-up window, okay? Once you're bored of wiping the virtual glass (and logged in for a unique Battlefield 3 dog tag), you can check back on the 27th for the promised gameplay trailer.
Apparently the 'Battlefield 4 art' will be unlocked when enough players log in, but I'll save you the trouble. See that picture above? Yeah. There it is.