XCM released a new version of their Diamond Clear replacement case for Xbox 360s with a HDMI port.

Also described as a crystal case. This case is compatible with the zephyr, falcon & jasper revisions of the Xbox 360.

No price info is known yet, but it will probably in the same price range as the older XCM crystal case for the Xbox 360s without a HDMI port (about 40 Euros).