Sony announced in Japan new HD digital recorder RDZ-D900A, RDZ-D800 and RDZ-D700.

The top model RDZ-D900A features a 400GB HDD and two Hi-Vision tuners. Additionally the D900A has a USB interface to transfer photos from a digital camera. It also supports to record video for the Sony PSP.
The Sony RDZ-D800 has the same HDD capacity as the RDZ-D900A but lacks the USB and PSP interfaces.
The RDZ-700 only features a 250GB HDD.
The new Sony HDD DVD recorder hit the store shelves in Japan on November 1st.
More details in this Sony press-release (Japanese).

Sony is pretty quick with releasing new HD digital recorder in Japan. In April the company announced the RDZ-D97A, RDZ-D77A and RDZ-D87 .