Yes, but only with a BIOS update. If you buy a board, you'd better have an older processor to use for updating BIOS. Check with the motherboard manufacturer for specifics about its latest BIOS before buying.
The BIOS update should be able to be done on the new CPU it just wont know what it is... ie. wont give you the name or correct FSB or multiplier but it should still post allowing you to update. In my experience anywayz