The subscription isn't paying for content. It's paying for your ability to play it online at all and the basic upkeep of the game.

What pays for content is buying the expansion pack, which is the whole reason the patch content is included in the advertisements for the expansion pack.

If you pay the subscription but do not buy the expansion pack, you actually cannot play much if any of the patch content.

Quote Originally Posted by Veritas-Ancora View Post
As you are probably aware, the amount of time required per patch appears to be increasing.
It has not increased since they announced it was increasing. It's been about 19-20 weeks for quite a long time now.