Don Blake pointed out Infoworld article about Jimmy Wales at Wikimania. While he offered a caveat, he said that the English version might be starting to reach its limit, perhaps eventually topping out at 2 million or 3 million articles.

That is laughable on two fronts. First, every business wants an entry for itself and its brands. Given the number of new brands every year, it won’t stop growing. Second, Wikipedia is now a source of biographies which will mean that it will become the source for obits as well. People aren’t going to stop dying and so Wikipedia will keep growing.