A little research in the forum will yield you a few results, one being this comment from Umberto not long ago.
This means, we are currently working only on our work in-progress projects, which at this time are KLAX, GSX and Hawaii 2. Everything else is now on hold, because we need to revaluate everything we'll do in the future in relationship with the new MS flight sim, since we'll probably have to update all our sceneries, if only to bring them to new KDFW/KLAX quality standards, not just KORD.
Aside from that comment, it had been said that they were planning/considering KMIA as their next project due to its showing in the last poll they ran.
Probably a little premature to start making requests at this point considering those 2 points.