As it seems the main sellers will keep up with the SB.
Asus is one of em:
http://www.fudzilla.com/motherboard/item/21746-asus-to-keep-its-sandy-bridge-mbs-on-market
As it seems, gigabyte also.
So maybe hope is not lost after all?
Tod
the article has been updated to say that are keeping it *with the intent to warranty exchage at a later date or something.