It looks like they may be available via GetBMWParts.com:
LED Door Projectors - BMW (63-31-2-468-386)
It mentions what appears to be a new part # (63-31-2-468-386) and that it replaces a couple of the Part #s previously mentioned in the thread...Cost is a little more, but if you're not familiar with them, they are BMW of Silver Springs (Maryland) on the backside of the website...I've ordered numerous items from them and have always been satisfied with the results! (Working on an order for a couple of things right now!)