I suppose no further development has been going on, at least not for me.
The connection used has been this:
http://www.schijf.org/colourlcd/usb_colour_lcd.gif
So there has been the FTDI FT245BM IC between usb and the display. Then to wiggle the lcd lines the FTDI bit bang features have been used.
For connecting the FT245BM chip to usb have a look into the datasheet:
http://www.ftdichip.com/Documents/ds232bv16.pdf
Then there are FT232BM Application Schematics:
http://www.ftdichip.com/Files/232sch20.zip
FT232BM Designers Guide:
http://www.ftdichip.com/Documents/dg232v20.pdf
FT232BM / FT245BM Bit Bang Mode:
http://www.ftdichip.com/Documents/AN232-01_BitBang.pdf
Other application notes:
http://www.ftdichip.com/FTApp.htm