Newegg has the rev B in the xp2100 version... didnt see it for the 1700 but you can call them and they can hook you up. They did it for me when I got a c1 stepping p4 2.4B...
<font color=green>Without question, the greatest invention in the history of mankind is beer. Oh, I grant you that the wheel was also a fine invention, but the wheel does not go nearly as well with pizza<font color=green>
On Newegg.com's web site, click on the top 10 sellers. You'll see the 2100 listed as "Revision B". It will also identify itself as Thoroughbred, not Palomino. From what I heard you can still get 2.1ghz with correct multiplier/FSB combinations.
<font color=purple><i>Smokey McPot - Your Baby's Daddy</i></font color=purple>
Newegg.com. I purchased 3 of them about three weeks ago...and they were all B's. Might have to unlock them... didn't check closely. Got them for $48.00 each, but I think price goes up a bit as supply goes down. And yes! They are all green and JIUHB.
I finally got the Tbred 1700+. I'm running it now on my KT133A mobo (Yeah, I know. Get a new mobo). It overclocks nicely to 2100 Mhz (15 * 140). That's XP2600+ territory. Well worth the $53 I paid.
I even tested on my even older KT7 mobo (now my nephew's system). Works there too but the chip is mod'd. For my mobo I mod'd so that I could access the higher multipliers and I set the default to 15x. It POSTed 15 x 100 when I cleared CMOS.
Strangely, on the KT7 (KT133) it POSTs at 20 x 100 by default. I wasn't expecting this. I planned 15x or 7X if the high multiplier bit just go lost but not 20x. Oh well, it works just the same. A 2000 Mhz Tbred B is a huge improvement over the 900 Mhz Duron. (Guess what my nephew's next upgrade will be?)
Anyway, that was just a test. The Tbred is back in my main system but even at 2100 Mhz it doesn't "feel" much faster than the Tbird @1.5 I was using previously. 600 Mhz faster and and about 7 degrees cooler. That makes it worth the investment. It's a whole 12 degrees cooler when I run it at the same 1.5 Ghz as the Tbird!
<b>99% is great, unless you are talking about system stability</b>