All the other board makers have already said which of their boards support BD, and they also have some BETA BIOS builds up, so this likely means that Biostar don't for some reason.
True, normal people can't get BD chips yet, and there is a slight chance that is what they are waiting for, but, it still seems odd they haven't really said anything at all.
"Biostar motherboards built on AM3 platform will not support AM3+ CPUs.
626-581-1055 menu select 2"
Meanwhile, every mobo group shows support. I doubt I will choose Biostar again, although I love my 890FXE.