subtlearts
They've been pretty consistent thus far, usually sometime in the last week of the month, it seems to me inching a bit closer to the end of the month of late but that might not be correct, just my vague impression.
I was thinking this as well, but I seem to recall a number of instances last year where the release for a given month actually occurred during the last week of the preceding month.
As for the comment by "scook" about no guarantee of monthly releases, I thought there was an entire discussion about this but I couldn't find it. I note that the payment choices are $149 up front of $14.99 per month, and one can reasonably expect there is a benefit to paying the entire amount of front (which equates to 10 monthly payments) -- so at least 11 releases but I could have sworn that somewhere CW seemed to indicate it would be monthly.
In any event let's see what happens next.