Since a while. Yinghai created the possibility to have both filo and etherboot as a payload as far as I can tell. He also added SATA and USB to Filo/Etherboot, which I backported to the "official Filo" that features a lot of other things that Filo/Etherboot does not do (grub menus for example)
Thanks. Just making sure I didn't lose track of where the official FILO was.