Vaneras on the EU forums this morning responded to some criticism that everyone is already 80, etc... He makes a few interesting points.
First, he notes that they have internal numbers that the majority of players don't yet have a level 80 character. This might be a known or assumed fact by some, but for many of us it's interesting to hear Blizzard extrapolate on the issue.
Vaneras goes on to point out an important tidbit – don't assume just because all your friends are 80 that everyone else is as well. People that play all the time tend to gravitate towards other people that play all the time, and folks that only log on once or twice a week gravitate towards each other as well.