World of Warcraft recently surpassed the two million mark for paying subscribers. Already the largest MMO in both North America and Europe, Blizzard expects to see even greater growth with the recent commercial launch in China on June 7, 2005. Anticipation for World of Warcraft was already at an all-time high in China, with peak concurrency during the open beta test topping 500,000 players, nearly equal to World of Warcraft's peak concurrency in all three current markets combined. Blizzard expects to see the new mark of two million subscribers shattered quickly with the arrival of players from China in the coming weeks.
I think this number is BS. Even if it were true - which I seriously doubt it is - I know for a fact that they're also losing a lot of customers. After 3 months (6 at the outside) there's absolutely no point in playing anymore.