The Brother DR-520 Drum Cartridge was just released for sale on the Pacific Ink web site. This cartridge works in the following Brother printers.

Brother MFC-8460N
Brother MFC-8660DN
Brother MFC-8860DN
Brother MFC-8870DW
Brother DCP-8060
Brother DCP-8065DN
Brother HL-5240
Brother HL-5250 Series
Brother HL-5280DW