Digital BW, The Print

Could we expect in a next future that the Epson R800 (or a printer of 
the same family with larger outputs) could replace the Epson 
2200/2100 for B&W prints (associated to dedicated RIP like 
ImagePrint)?

I understand that the new Epson R800 is fully able to print on gloss 
papers but that unlike the Epson 2200/2100 there is no gray 
cartbridge.

JM Humbert
Paris, France