Came across this on Wikipedia, seems someone didn't waste any time.
Beginning in 2008, The Watchtower will have different focuses in the two issues that are published each month. The issue published on the first of each month will focus on religious articles that will be offered to the general public. The issue published on the fifteenth of each month will contain the congregational study articles for the month and other interorganizational materials that will be directed to current members and other interested ones but will not be offered to the general public.