UPDATE-
I FINALLY got a hold of a a955 with a bad ESN. So tonight and tomorrow, I will be doing many tests with my a855 and this other one. We will finally have this question answered in the next 24 hours. For all of you who subscribed, thank you for being interested.
I picked a used A855 off of Craigslist the other day to replace one that had been dropped about 6 months ago. The first thing I noticed was the keyboard - it was not like the keyboard on my previous Droid. This one had raised buttons whereas my last Droid keyboard had flat buttons. As a person with big fingers this made it hard to type, and now with the 'new' Droid that problem is gone. I've been searching the Internet high and low to see if anyone could shed any light on this, and this thread was the closest I came. I'll continue to do more research into this as my curiosity is driving me crazy, but I wanted to post these pics here to see if anyone has any insight.