Well, from what I've read Gundam Ace was originally published something like quarterly, than bumped up to every 2 months and finally became a monthly publication. They might do something similar with its Macross sibling- a limited publication schedule at first, then more issues a year if the demand and content warrants it. A good recent example is when they started publishing Kerokero Ace last year- after issue one, it took a 2 month hiatus whilst they analysed the sales and customer feedback. One change brought on by this was more pages (although given they've started filling pages with old Keroro chapters, this might not have been for the best).
The advert suggests they're trying to hook Minmei, Ranka and Sheryl fans (at least in terms of promotion).