There are more new subscribers joining than old players leaving the game, but it's just because the game is new and shinny, after a year the real numbers will be shown.

From my point of view, even if this game is getting a lot of new subscribers, it is also losing old subscribers too fast, once the novelty has passed, the old player leaving will outnumber the new subscribers until only the loyal fan-base will be left, and the size of that fan-base will determine if the game changes or not.