You need more than a right socket type, you need the right BIOS. You may end up getting the board and not being able to boot your computer to apply the BIOS update. Hopefully you have the old CPU still so you can use it to update the BIOS if needed.
Remember, the Bulldozer chips where delayed a few months after the AM3+ motherboard release, so no AM3+ motherboard has support for bulldozer if you have an original BIOS. or any motherboard.
btw, which motherboard did you order?
-=Mark=-