Yes they did have a newcastle... It is 2.0ghz versus the 1.8ghz of the winchester sckt 939...the newcastle does not have dual channel memory controller but in most instances that 200mhz more cpu clock makes up for that and is slightly faster. The only issue will be that if you have a sckt 939 mobo this is not compatable. Also I would stay with the sckt 939 to be more directly in line with getting venice cores later and/or dual core cpus....
Are you sure they sent it to you wrong??? A guy a few weeks back had a thread similar to this and found out that was the one he clicked. AMDs setup gets rather confusing with so may chips of equal rating with differences in sckts, cache, true speed, etc....If they made a mistake they will take care of you....