Those new burners, rocking the name "BRD-M4" should be put on sale in mid-November in Japan at a price a little bit under 400€.
Now that the news is upside down, let me continue with the specifications: one good news is the Serial ATA connection available on all, with the exception of the external version, which will still use USB.
The BD-R and BD-R DL can be burnt in 4x; of course, everything is "Most OS friendly" (Windows 2000/XP/Vista and Mac OS X 10.2..
BD-R and BD-R DL x4
BD-RE and BD-RE DL x2
BR-ROM x4
I-O DATA Blu Ray burners