Anything beyond a month in the past is dim and fuzzy, but yes, I'm pretty sure I just upgraded from 4.0 and didn't start over from scratch.
Now I wonder if wiping and loading the 4.1 OS will unleash new and wonderful capabilities on my BB? I'll probably do that the same time I finally get around to getting a local phone number (it's been a year since I moved). I just have this unreasoning fear of someone (Sprint or myself) screwing up my blackberry and destroying my happiness