I consider 1 patch being 1 worthwhile month. You are right, there were 2 patches. So that's 2 months with a reason to have a sub and every other month since release having no reason for having a sub. As I said, in my maths I consider 1.3 being in July. I changed my first post a long time ago as you can see by the quote on previous page, it's indeed not 5 months.
We do expect content each month because they said it's what they were going to do.