Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Today I noticed that the number of community (?) is changed in the reputation league address. E.g. it was 355 before and now is 609 for Stack Overflow in Russian:
The old link now refers to a 404 page. Why has the number been changed?