Digital BW, The Print

So, apparently Epson has (kinda) officially launched the 4000.  See 
this month's American Photo and this link: 
http://forums.dpreview.com/forums/read.asp?forum=1013&message=6385546

I haven't heard anything more about its B&W capabilities, however.  I 
recall reading somewhere that it is advertised by Epson as printing 
neutral or toned B&W out of the box, but I take the claim of 
neutrality with great skepticism (after all, that's what they said 
about the 2200/7600/9600).

Does anyone have any info on what changes Epson has made w. regard to 
B&W printing?  I know there are now 8 inks, but as I understand it, 
the "eighth" ink just means you can have photo black and matte black 
loaded at the same time and switch via software.  Are they providing 
new profiles for B&W?  (I have yet to see any profile that actually 
makes a truly neutral print under varying lighting conditions).  Or 
have they made modifications to their software so that it operates 
like ImagePrint's grayscale engine (which actually does produce 
neutral B&W)?  AND, if it is a software modification, a whole lotta 
2200/7600/9600 users are gonna be mighty pissed if it's not also made 
available as a driver update for those printers).

So, do we have any reason to believe that the 4000 will handle B&W 
differently (better) than existing Ultrachrome models?