Well, currently, I do not have a schedule out for the new book. It is called "Square Peg in a Round Hole" and is currently pegged as a Dr. Lopez story. Check the Episodes page at http://www.starshipmoonhawk.com to get a brief synopsis of that, and several of my upcoming books leading into the story arc in The Zendosian Connection! Then come back and gain a fuller understanding of what is going on in The Adventures of Milea!
This one is for anyone else reading this:
One small thing... after you read the first three books, they ain't free anymore. I hope you think they are worth it. If not, StoneGarden.net (my publisher) does have a limited return policy. I think you will enjoy it. After 4 installments, I haven't gotten any hate mail... yet!