It's the average of the people playing right now, and the population is still as "high", exactly like two weeks ago. So the "population fell off a cliff at lvl 30" hasn't happened.
Edit : actually, the population is now "full" on my realm, not "high". Meh, it's even increasing compared to last week. And that's with the server size expanding.
Nearly all EU realms are "full".
There is :
1 german and 3 english at "low"
1 russian and 2 english at "medium"
5 english, 1 german, 1 french, 1 russian at "high".
Everything else (3 russian, 3 french, 7 german and 13 english) is "full".
Damn dat population that fell off a cliff
I stand by my previous post : the game is actually holding much better than expected. There WILL be a drop-off, but not yet.
These forums are just a cesspool of unmoderated negativity and tons of posters that just have some weird hate-boner about Classic.