Greg: yes, and
here is the National Standard. There is a link to the summary page which covers the chemical requirements (ash content, minimum cetane rating, sulphur content, acidity, density, flashpoint etc etc).
The problem I think the motor vehicle manufacturers have is that when we all hear the word "biodiesel" we immediately turn our heads towards the local fish and chip shop. They assume that because WE (the vehicle owners) are contemplating biodiesel, what we're really thinking about is chucking a few battered savs in the tank and taking it out for a run.
Commercially manufactured biodiesel (that the oil companies either make, or purchase and mix into their diesel) will HAVE to comply with the national standard and won't be a problem.
It's when you go pouring your old deep fryer oil in the tank that causes issues. There might be recipes for making your own on the internet, but for now - on these new diesels at least - I think the best advice is sit back and let the experts do it. Oil companies have been making go-go-juice (and draining our wallets) for years - I'll leave it in their hands.