Here's how you can tell if you have the old finish...
Get your hands a little sweaty and rack the side a few times. Put the gun away for a week. If when you come back to it there is rust everywhere you touched the gun then you have the old finish.
SA did not realize that they needed to change the finish quickly. Did they start importing XD's in 2001? That's 5 years of a substandard finish.
I bought my first XD in 2003 and sent it to SA for work because the slide would lock back mid-mag. Unlike other reports I've heard about good service from SA, my experience wasn't so great at all. For one, they did not pay shipping both ways. I paid about $50 to ship it to them. Second, they did not redo the finish like I hear so many others say SA did for them. Finally, they didn't fix my premature slide lock issue, they said they couldn't find a problem.
I attempted to cantact SA again recently via email to see if I might be able to finally get my 4 year old gun working for the first time and I haven't heard back after more than a week. I don't know why SA loves everyone else so much and hates me so bad. Every time I hear people talking about their great experience with SA customer service I wonder what company I must be dealing with.
Oh and PS, I love my XD and I feel like I shoot it well. I just wish it was worthy of being a CCW or SD gun instead of an unreliable range gun.