The guy's post said he was pleasantly pleased with his raised keys.
Yes, second difference, the flat keys keyboard is often waved, while the curved keys one, is not.
It's silmly a silent upgrade, that no one (at least in europe) has noticed because, everyone has seen only it's own phone.
In Italian forums at least two guys had their Milestone warranty swapped.
The first (lucky) had a flat keyboard on the old phone, and now has a curved one, to the second one the changes went in the opposite direction.
So there is no doubt that the keyboard are completely different on the Milestones, I'm just curios to see if in the US you, Droid users, are aware of that.
Same thing happened to me...my first one developed "raised" keys...i thought it was normal,then it got defective so i got a new one and it was all flat.I also noticed that the first one (Raised keys) was newer than the other one because of the bar code on the battery door.