Mark,
As you know, I received my copy a few weeks ago. Overall, it's very, very well done... an excellent update and revision to this classic text thanks to the efforts of many, but most notably, Mr. Rowlinson.
I'd forgotten to look at Banff in detail... so I just pulled the book out. Unfortunately, the news you've received is accurate. The new Banff scorecard, revised text match, and sidebar on the Devil's Cauldron hole have been properly altered, and match. But the numbering of holes on the original map wasn't changed, so it doesn't.
P.S. Yes, Sean... a new clubhouse, situated between the original 5th and 14th holes, was built when they added a third nine at Banff in 1989. This addition resulted in the resequencing of holes on the original course, which now begins with Thompson's 5th.